I got a* in phy,chem and a in bio in May June 2023 series. Thank u so much for your effort in uploading quality content like this. I can’t still believe that I have gotten a*s. I cram the lessons from your videos one day before the exam cuz it is my fault not to study regularly before the exam and I can’t thank you enough from the bottom of my heart. You are one of the best teachers I’ve ever seen.
Firstly, I watched this whole syllabus video and made sure that I had covered the whole syllabus and understood it well. After that, I practiced for past papers. As I didn’t have that much time, I just watched past paper solving videos instead of solving the problems on my own and made sure that I understood the solutions. The most important thing is that you understand the lessons and practice past papers as many as you can and you need to remember the important things like formulas, reactions, tests, etc. Don’t be worry too much, you can do the best.
i hv the paper 4 exam after 1 day and i feel like im not ready as i didnt study regularly before like you , now im only depending on this video do you think it would help me and i could pass
I am forever grateful for your service towards the people. Especially your examples and diagrams. You clearly state what the hardest and easiest questions we may get in an exam are. I have gone from a failing class clown 🤡 to the teacher using my exam paper as the mark scheme for the class.
Hello Ms. Hazel. I just got my IGCSE score back for my Chemistry (0620) and Biology (0610) exam. I am an independent homeschool student and I have used your videos as revision for my chemistry and biology exam. I just want to say thank you; with your videos and help I got an A on my chemistry exam and a B on my Biology one. Thank you so much, you are a godess!
00:02 - Explaining states of matter 02:04 - Evaporation & Diffusion in Chemistry 06:18 - Structure of an Atom and Electronic Configuration 08:17 - Understanding atomic structure and periodic table 12:36 - Understanding ionic bonding and electron transfer. 14:38 - Chemical bonding and electron transfer 19:30 - Explaining electron distribution in molecules 21:44 - Main chemical structures are giant covalent, giant ionic, giant metallic, and simple molecular. 25:18 - Types of intermolecular forces and properties of metallic structures 27:05 - Balancing chemical equations using tally charts 30:58 - Formulas and charges of different compounds 32:50 - Understanding relative atomic mass and using the formula triangle for calculations. 36:52 - Calculating the number of moles with formula triangle 38:50 - Calculating the mass and volume of carbon dioxide collected 42:56 - Calculating mass and volume of carbon dioxide 45:08 - Moles, Excess Reagents, Percentage Yield Calculation 48:56 - Understanding titration calculations with the formula triangle. 50:38 - Calculating concentration using formula triangle 54:12 - Calculating moles and atoms 56:03 - Electrolysis principles and naming of ions 59:49 - Remember diatomic molecules and their uses in industrial processes 1:01:42 - Electrolysis of different compounds and the products formed 1:06:39 - Uses of chromium and tin in coating metals 1:08:48 - Explanation of hydrogen fuel cell process and key terms 1:12:34 - Possible errors causing anomalous results 1:14:22 - Endothermic reactions and energy level diagrams 1:18:38 - Increasing concentration and surface area leads to more frequent collisions and higher reaction rates. 1:20:23 - Chemical equilibria and dynamic equilibrium 1:23:52 - Manufacture of ammonia involves nitrogen, hydrogen, and temperature control. 1:25:41 - Effects of temperature, pressure, and catalysts on equilibrium and color changes 1:30:26 - Understanding oxidation numbers and charges. 1:32:26 - Oxidation number rules simplify covalent compound analysis 1:36:01 - Explanation of oxidation and reduction 1:38:06 - Acids have low pH and donate hydrogen ions 1:43:21 - Strong bases readily dissociate and have a high pH, while weak bases do not readily dissociate and have a lower pH. 1:45:42 - Bases, salts, and reactivity of acids. 1:49:22 - Methods for making soluble salts 1:51:00 - Titration method is used to make ammonium, sodium, or potassium salt. 1:54:16 - Reactivity and properties of Group 1 metals 1:56:14 - Group 1 metals react with oxygen, water, and halogens to form oxides, hydroxides, and chlorides and they have specific flame colors. 1:59:59 - Halogen displacement and general properties of metals and non-metals 2:02:08 - Properties and uses of aluminum and copper 2:05:52 - Reactivity of group 1 metals and preventing rusting of iron 2:07:47 - Galvanizing protects iron from rusting using sacrificial protection. 2:12:03 - Obtaining calcium oxide and aluminum through chemical reactions 2:13:58 - Electrolysis of water and tests for purity 2:18:38 - Various pollutants - sources and effects 2:20:36 - Various gases contribute to climate change and environmental issues. 2:24:56 - Reducing acid rain through catalytic converters 2:27:02 - Explanation of photosynthesis and organic chemistry 2:30:46 - Alkenes contain a double carbon bond. 2:32:50 - Isomers and Homologous series in C4H8 compounds 2:36:36 - Different uses of fractions from crude oil 2:38:50 - Cracking and reactions with bromine water 2:42:50 - Alcohol oxidation and production methods 2:44:31 - Hydration of ethene produces pure ethanol. 2:48:26 - Formation of ester and addition polymerization 2:50:43 - Formation of polypropylene and deducing the repeat unit of a polymer 2:54:31 - Drawing polyester and polyamide structures 2:56:39 - Understanding the formation and disposal of plastics 3:00:34 - Lab equipment and solution terminology 3:02:24 - Titration is used to accurately find volumes and concentrations of reactants. 3:06:14 - Using universal indicator in titrations is inappropriate. 3:08:05 - Chromatography is used to separate liquids with different solubilities. 3:11:55 - Understanding pure substances and mixture 3:13:39 - Flame tests and precipitation reactions
my test topics -> 00:00:32 - solids liquids and gases 00:02:40 - diffusion 00:04:10 - atoms elements and compounds 00:05:47 - atomic structure and the periodic table 00:09:56 - isotopes 00:10:44 - ionic bonding 00:18:17 - covalent bonding 00:21:39 - giant and simple covalent structures 00:25:35 - metallic bonding 00:26:38 - balancing equations and stoichiometry 00:28:57 - writing the formulae of common compounds 00:33:30 - mole calculations 00:53:40 - the Avogadro constant 00:56:28 - electrolysis 01:26:59 - redox reactions 01:27:40 - oxidation numbers 01:38:02 - acids and bases 01:45:13 - oxides 01:45:22 - salts 01:55:00 - soluble salts that are not SPA 01:54:38 - the periodic table 01:54:43 - group I elements 01:58:29 - halogens (group VII) 02:00:49 - transition metals 02:00:57 - noble gases 02:59:51 - experimental design 03:02:46 - acid-base titrations 03:07:48 - chromatography 03:09:40 - separation and purification 03:12:29 - identification of ions and gases total time for this is 1:43:00 hours but it will probably take roughly 2 hours counting pauses
I usually don’t comment on videos but this video helped me so much, today was my chemistry paper 4 and I aced it after studying for only one night thanks to this video, I’m so confident in what I’m going to get thank you so much, every thing you need is literally in this video
Thank you SO MUCH Ms Hazel!! This was incredibly helpful and I was finally able to understand polymerisation (I asked my chem teacher many times but still didn't understand). Thanks again for makiing such a clear and consise video!💗💕💗
video reached faaaar beyond my expectations. DID NOT EXPECT A LITERAL PRACTICAL DEMONSTRATION FOR THE EXPERIMENTS. This helped me a ton! I think i am prepared for my IG CHEM exam tomorrow
Thank you infinitely for these videos, Miss Hazel. I have 20 days left for my mock exams and felt sooo overwhelmed by all the information in the textbook that i thought i had to absorb, but you included all of what i learned within 2 years in a 3-hour video , in an easy to digest format, God bless you ♡
Greetings Miss Hazel I would really like to appreciate you kindness and upload revision videos these videos are really going to get helpful when I write my IGCSE's in May June 2024 You are really the best coz you explain better that my teachers, and did I tell you that you have the sweetest voice? Love you again 🧡🧡🤟
Hi hazel! I finished my Igcse today and came here to say thank you🫶 ur videos helped me a lot throughout my school year till my finals and I am so glad that I found ur channel. I hope u will keep doing this. Words can’t describe how thankful I am right now. I would not be able to pass through this year if it’s not because of you!thank you so much!! I wish all the good things will come to you, take care and stay healthy and happy!
The perfect guide for sure. It really helped me understand chemistry much easier than how my teacher teaches at school. I really appreciate your hard effort made for this video. Hopefully I pass my chemistry exam. 🙏🏼
@Science with Hazel hello,in 2023 will be given the identification of ions and gases tests in exams paper 6?We don t need to learn it?I keep hearing different things.
I am studying in 8th grade and I was finding igcse chemistry really hard and I just watched this video and this has helped me a lot in my chemistry revision. Thank You.
Been stressing over chemistry for the past year and now finals are coming up. You are a life saver, this video is helping me so much!!❤ I love the easy to follow descriptions and the words on the screen for me to note down😊
just wanna say thank you so much i was losing hope in chemistry but this helped me so so muchh my igcse chemistry exam is in a month thanks to you its more understanded
Even though I'm not rushed like some of the viewers, my exam is in more than 50 days, but I thank you so much. Truly, thank you. You don't know how many students you saved from failing. Some of us, like me, love chemistry and understand it but our teachers aren't good at explaining
hi hazel, i am a private candidate and i sat for oct/nov session for igcse. i only used your videos for preperation and i covered everything under 3 months and i got an A* in chemistry and physics and an A in biology thanks alot for posting such content for which any other person would charge but you do it for free thanks alot .i appreciate your hard work from the bottom of my heart
If I dont pass I am going to sell my soul to Hazel in hopes of the bonds holding my molecular structure together evaporating; causing me to fall apart at an atomic level.
Today I was studying about electrons and elements for 2 hours but you summarized everything I needed in 2 minutes 😭 I can't comprehend how kind and big a human heart must be to take time and effort to help people struggling with studying and procrastination. Thank you so much! You were so helpful and straightforward. I really thank you from the bottom of my heart
thankyou so much, i used this video during my 9th final and got a B. the intersting part is that i started studying chem for the first time basically in 9th, now im also using this for my upcoming board exams.(india)
This is really good but I find that the video quality is a bit low so I cant really make out some of the past paper questions like in 1:12:25 is it possible to change this?
Had my chem paper today it was so damn different from the paper pattern electrolysis didn’t come and there was like 3 mark mole question and 2 marks related to avagandros number it was maily metals and haber process
btw guys, electrolysis of aqueous solution concentrated aqueous - halide formed in the anode dilute aqueous - oxygen formed in the anode i think the video says that always halide is formed...i think it needs correction :)
I honestly really enjoy your videos so much but could u please please please make videos like these for Cambridge A levels? I’d really really appreciate it for an eternity, genuinely! 🙏
OMDS THANK YOUUU. BRO I USED TO THING PAPER 4 WAS HARD BUT I WATCHED ONLY YOUR VIDEO AS REVISION AND I ACTUALLY UNDERSTOOD IT, I THINK I'LL DO WELL IN THE PAPER THANKS TO YOU!!!
it is very nice video. i am sure it transform me from A to A* student. but i have one comment if you use subtitles in the video it will be better than now.
Idk lime this formula is like if it were the speed = distiance/ time of chemistry, it is fundemental for all stoichometric questions, you need to remember that mass will always be divided by the Mr, to give you the moles, in IGCSe the moles normally gives a small rounded unit like 0.01 or 0.005 or 0.1 or 1 its normally small units no needing to round it. THE MR is important to know how to cauclate which is getting the mr of each elment present in the formula, for exampl H2O Mr is O(16) +H2(2*1) = 18@@VelAqua
when will u be uploading the physics all in one video for 2023 onwards? just wanted to know because these videos are super helpful and I have a test coming up soon :)
1:03:23 You forgot to mention one thing, here in electrolysis, if the solution with a halide is dilute, then the OH molecules would be discharged (as water and oxygen) rather than the halide being discharged.
hello there. I know it's 2 years later. however can I ask why we increase the temperatures? would that not mean the equilibrium goes to the endothelial? 1:24:28
Im so confused 2:46:00 shouldnt the general formula be CnH2n-1C00H I know its not your formua but i have read in other parts but that doesnt make logic
56:10 I can't quite get what's going on here. if you want to find out the amount of atoms of oxygen in 3 moles of glucose, shouldn't it be (1.806 * 10^24) * 0.25? Why do you multiply 6 on the value of no. of molecules?
Hi Hazel. Your videos are incredible. I just have one question 😃. Do you have any planes to upload the A level and IB Physics video, or have you already uploaded it? I can't seem to find it. Thank you
just did my chemistry theory exam a couple of hours ago and I have to say THANK YOU SO MUCH WITHOUT YOU I WOULD'VE BEEN DONE FOR BLESS YOU FOR HELPING THOUSANDS OF STUDENTS FOR FREE
Topic timings:
00:00:32 - Solids, liquids & gases
00:02:40 - Diffusion
00:04:10 - Atoms, elements & compounds
00:05:47 - Atomic structure & the periodic table
00:09:56 - Isotopes
00:10:44 - Ionic bonding
00:18:17 - Covalent bonding
00:21:39 - Giant & simple covalent structures
00:25:35 - Metallic bonding
00:26:38 - Balancing equations & stoichiometry
00:28:57 - Writing the formulae of common compounds
00:33:30 - Mole calculations
00:53:40 - The Avogadro constant
00:56:28 - Electrolysis
01:09:43 - Energetics
01:18:12 - Physical & chemical changes
01:18:18 - Rates of reaction
01:20:44 - Reversible reactions
01:26:59 - Redox reactions
01:27:40 - Oxidation numbers
01:38:02 - Acids & bases
01:45:13 - Oxides
01:45:22 - Salts
01:54:38 - The periodic table
01:54:43 - Group I elements
01:58:29 - Halogens (Group VII elements)
02:00:49 - Transition metals
02:00:57 - Noble gases
02:01:07 - Properties of metals
02:02:14 - Uses of metals
02:03:13 - Alloys and their properties
02:04:45 - The reactivity series
02:06:43 - Corrosion of metals
02:08:11 - Extraction of metals
02:14:38 - Water
02:16:42 - Nitrogen & fertilisers
02:18:02 - Air quality & climate
02:27:57 - Organic chemistry
02:34:57 - Fuels & fractional distillation
02:38:53 - Alkanes, alkenes & cracking
02:41:16 - Alcohols
02:45:32 - Carboxylic acids
02:49:00 - Polymers
02:59:51 - Experimental design
03:02:46 - Acid-base titrations
03:07:48 - Chromatography
03:09:40 - Separation & purification
03:12:29 - Identification of ions and gases
Thanks dear tomorrow I have my chemistry exam and this has been a lesson wonderful.
@@taniamsimango321 hey me too how was it?
@@taniamsimango321 I also have an exam
1:12:08
@@taniamsimango321 sameee
THE WAY YOU TAUGHT ME MORE IN HOURS THEN MY WHOLE SCHOOL EVER DID IN MONTHS 😭
U just didn’t focus in your classes that’s all
@@Rzs.254 bad teachers exist too lol
frrrrrr
@@zannulti bad students and excuses also exist lmao
@@rioandmomsvlog8562bad students wouldn’t be here trying to learn lol
2024 IGCSE students assemble 👇
Wallahi I'm finished...
@@fromthelitvault dawg I gotta help myself out first 😭🙏
hi
Sitting my exam Monday
@@AliyaAliya-l2g me too
My list pls ignore
Topic timings:
00:00:32 - Solids, liquids & gases
00:02:40 - Diffusion
00:04:10 - Atoms, elements & compounds
00:05:47 - Atomic structure & the periodic table
00:09:56 - Isotopes
00:10:44 - Ionic bonding
00:18:17 - Covalent bonding
00:21:39 - Giant & simple covalent structures
00:25:35 - Metallic bonding
00:28:57 - Writing the formulae of common compounds
00:56:28 - Electrolysis
01:09:43 - Energetics
01:18:12 - Physical & chemical changes
01:18:18 - Rates of reaction
01:20:44 - Reversible reactions
01:27:40 - Oxidation numbers
01:26:59 - Redox reactions
01:38:02 - Acids & bases
01:45:13 - Oxides
01:45:22 - Salts
01:54:38 - The periodic table
01:54:43 - Group I elements
01:58:29 - Halogens (Group VII elements)
02:00:49 - Transition metals
02:00:57 - Noble gases
02:01:07 - Properties of metals
02:02:14 - Uses of metals
02:03:13 - Alloys and their properties
02:04:45 - The reactivity series
02:06:43 - Corrosion of metals
02:08:11 - Extraction of metals
03:07:48 - Chromatography
03:09:40 - Separation & purification
03:12:29 - Identification of ions and gases
03:02:46 - Acid-base titrations
02:14:38 - Water
02:16:42 - Nitrogen & fertilisers
02:18:02 - Air quality & climate
02:27:57 - Organic chemistry
00:26:38 - Balancing equations & stoichiometry
00:28:57 - Writing the formulae of common compounds
00:33:30 - Mole calculations
00:53:40 - The Avogadro constant
02:27:57 - Organic chemistry
02:34:57 - Fuels & fractional distillation
02:38:53 - Alkanes, alkenes & cracking
02:41:16 - Alcohols
02:45:32 - Carboxylic acids
Yo this is low-key helpful thanks bro
this very helpful thanks a ton!
I just got an A* in Igcse chem. Thank you soo much for all the help Hazel.
I got a* in phy,chem and a in bio in May June 2023 series. Thank u so much for your effort in uploading quality content like this. I can’t still believe that I have gotten a*s. I cram the lessons from your videos one day before the exam cuz it is my fault not to study regularly before the exam and I can’t thank you enough from the bottom of my heart. You are one of the best teachers I’ve ever seen.
Amaaaazing! Congratulations!!
Omg can u tell me how you reviewed for the test of chemistry? Im about to take the exam next month and i don’t know how to get high score 😭 im scared
Firstly, I watched this whole syllabus video and made sure that I had covered the whole syllabus and understood it well. After that, I practiced for past papers. As I didn’t have that much time, I just watched past paper solving videos instead of solving the problems on my own and made sure that I understood the solutions. The most important thing is that you understand the lessons and practice past papers as many as you can and you need to remember the important things like formulas, reactions, tests, etc. Don’t be worry too much, you can do the best.
@@yoonpopoaung21 Hi congrats on your a*s did you just prepare from this video for the exam also how did you cover the long bio syllabus.
i hv the paper 4 exam after 1 day and i feel like im not ready as i didnt study regularly before like you , now im only depending on this video do you think it would help me and i could pass
It's been a year since my igcse exam , just wanna say thank you for the revision videos. You are part of the reason I got A* in biology and chemistry
I have a question
This video contain all the syllabus ?
Like can i study this only or i need more things to study ??
Actually i really hate studying
And i am not good at all in chemistry soooo!??
@@Min-H0eSh are you preparing for your igcse exams or is it just your school exam
@@justaguy4019
IGCSE
I am forever grateful for your service towards the people. Especially your examples and diagrams. You clearly state what the hardest and easiest questions we may get in an exam are. I have gone from a failing class clown 🤡 to the teacher using my exam paper as the mark scheme for the class.
That's so good! Thank you so much!
thats an amazing achievement!!
@@SciencewithHazel will video be enough to get A* in CIE igcse o level??
@@aishaththaimanizam8044 my man chose to wake up 1 day before the paper
@@rivaanlamba8925 oh my God! did he study?
Hello Ms. Hazel. I just got my IGCSE score back for my Chemistry (0620) and Biology (0610) exam. I am an independent homeschool student and I have used your videos as revision for my chemistry and biology exam. I just want to say thank you; with your videos and help I got an A on my chemistry exam and a B on my Biology one. Thank you so much, you are a godess!
Amazing! Congratulations!!
If you guys are low on time I would suggest watching the video at 1.25x speed because its still understandable easily.
tyy
good luck to everyone doing their exams tomorrow!
tomorrow?
@@omerhussain228 yes which was yesterday
@@euejfyu328 we have it on Thursday 2nd May
Yo bro did u do igcse 0620? If yes pls tell the details.
yea same could u tell the details bro
So much respect for you and what you've done for us students over the years for FREE!!! thanks ms Hazel!
I LITERALLY LOVE YOU
my igcse exam is on may 2. good luck to everyone and thank you hazel for this quick extended revesion
Same here but I'm nervous
@@pearlmapanda9194 im nervous too but lets pray that god makes stuff easy for us
Yeah sure that🙏
mines on may 4
How'd the paper go?
00:02 - Explaining states of matter
02:04 - Evaporation & Diffusion in Chemistry
06:18 - Structure of an Atom and Electronic Configuration
08:17 - Understanding atomic structure and periodic table
12:36 - Understanding ionic bonding and electron transfer.
14:38 - Chemical bonding and electron transfer
19:30 - Explaining electron distribution in molecules
21:44 - Main chemical structures are giant covalent, giant ionic, giant metallic, and simple molecular.
25:18 - Types of intermolecular forces and properties of metallic structures
27:05 - Balancing chemical equations using tally charts
30:58 - Formulas and charges of different compounds
32:50 - Understanding relative atomic mass and using the formula triangle for calculations.
36:52 - Calculating the number of moles with formula triangle
38:50 - Calculating the mass and volume of carbon dioxide collected
42:56 - Calculating mass and volume of carbon dioxide
45:08 - Moles, Excess Reagents, Percentage Yield Calculation
48:56 - Understanding titration calculations with the formula triangle.
50:38 - Calculating concentration using formula triangle
54:12 - Calculating moles and atoms
56:03 - Electrolysis principles and naming of ions
59:49 - Remember diatomic molecules and their uses in industrial processes
1:01:42 - Electrolysis of different compounds and the products formed
1:06:39 - Uses of chromium and tin in coating metals
1:08:48 - Explanation of hydrogen fuel cell process and key terms
1:12:34 - Possible errors causing anomalous results
1:14:22 - Endothermic reactions and energy level diagrams
1:18:38 - Increasing concentration and surface area leads to more frequent collisions and higher reaction rates.
1:20:23 - Chemical equilibria and dynamic equilibrium
1:23:52 - Manufacture of ammonia involves nitrogen, hydrogen, and temperature control.
1:25:41 - Effects of temperature, pressure, and catalysts on equilibrium and color changes
1:30:26 - Understanding oxidation numbers and charges.
1:32:26 - Oxidation number rules simplify covalent compound analysis
1:36:01 - Explanation of oxidation and reduction
1:38:06 - Acids have low pH and donate hydrogen ions
1:43:21 - Strong bases readily dissociate and have a high pH, while weak bases do not readily dissociate and have a lower pH.
1:45:42 - Bases, salts, and reactivity of acids.
1:49:22 - Methods for making soluble salts
1:51:00 - Titration method is used to make ammonium, sodium, or potassium salt.
1:54:16 - Reactivity and properties of Group 1 metals
1:56:14 - Group 1 metals react with oxygen, water, and halogens to form oxides, hydroxides, and chlorides and they have specific flame colors.
1:59:59 - Halogen displacement and general properties of metals and non-metals
2:02:08 - Properties and uses of aluminum and copper
2:05:52 - Reactivity of group 1 metals and preventing rusting of iron
2:07:47 - Galvanizing protects iron from rusting using sacrificial protection.
2:12:03 - Obtaining calcium oxide and aluminum through chemical reactions
2:13:58 - Electrolysis of water and tests for purity
2:18:38 - Various pollutants - sources and effects
2:20:36 - Various gases contribute to climate change and environmental issues.
2:24:56 - Reducing acid rain through catalytic converters
2:27:02 - Explanation of photosynthesis and organic chemistry
2:30:46 - Alkenes contain a double carbon bond.
2:32:50 - Isomers and Homologous series in C4H8 compounds
2:36:36 - Different uses of fractions from crude oil
2:38:50 - Cracking and reactions with bromine water
2:42:50 - Alcohol oxidation and production methods
2:44:31 - Hydration of ethene produces pure ethanol.
2:48:26 - Formation of ester and addition polymerization
2:50:43 - Formation of polypropylene and deducing the repeat unit of a polymer
2:54:31 - Drawing polyester and polyamide structures
2:56:39 - Understanding the formation and disposal of plastics
3:00:34 - Lab equipment and solution terminology
3:02:24 - Titration is used to accurately find volumes and concentrations of reactants.
3:06:14 - Using universal indicator in titrations is inappropriate.
3:08:05 - Chromatography is used to separate liquids with different solubilities.
3:11:55 - Understanding pure substances and mixture
3:13:39 - Flame tests and precipitation reactions
to go over before the exam, pls ignore
omg i needed these exact topics. thank you
time stamp for me to do pls ignore
01:09:43 - Energetics
01:18:12 - Physical & chemical changes
01:18:18 - Rates of reaction
01:20:44 - Reversible reactions
01:26:59 - Redox reactions
01:27:40 - Oxidation numbers
01:38:02 - Acids & bases
01:45:13 - Oxides
01:45:22 - Salts
02:03:13 - Alloys and their properties
02:04:45 - The reactivity series
02:06:43 - Corrosion of metals
02:08:11 - Extraction of metals
02:14:38 - Water
02:16:42 - Nitrogen & fertilisers
02:18:02 - Air quality & climate
02:27:57 - Organic chemistry
02:34:57 - Fuels & fractional distillation
02:38:53 - Alkanes, alkenes & cracking
02:41:16 - Alcohols
02:45:32 - Carboxylic acids
02:49:00 - Polymers
02:59:51 - Experimental design
03:02:46 - Acid-base titrations
03:07:48 - Chromatography
03:09:40 - Separation & purification
03:12:29 - Identification of ions and gases
study for practice
01:54:38 - The periodic table
01:54:43 - Group I elements
01:58:29 - Halogens (Group VII elements)
02:00:49 - Transition metals
02:00:57 - Noble gases
02:01:07 - Properties of metals
02:02:14 - Uses of metals
00:02:40 - Diffusion
00:04:10 - Atoms, elements & compounds
00:05:47 - Atomic structure & the periodic table
00:09:56 - Isotopes
00:10:44 - Ionic bonding
00:18:17 - Covalent bonding
00:21:39 - Giant & simple covalent structures
00:25:35 - Metallic bonding
This helped me as well so thanks
ignore !!!!!!!!!!
00:00:32 - Solids, liquids & gases
00:02:40 - Diffusion
00:04:10 - Atoms, elements & compounds
00:05:47 - Atomic structure & the periodic table
00:09:56 - Isotopes
00:10:44 - Ionic bonding
00:18:17 - Covalent bonding
00:21:39 - Giant & simple covalent structures
00:25:35 - Metallic bonding
00:26:38 - Balancing equations & stoichiometry
00:28:57 - Writing the formulae of common compounds
00:33:30 - Mole calculations
00:53:40 - The Avogadro constant
00:56:28 - Electrolysis
01:09:43 - Energetics
01:18:12 - Physical & chemical changes
01:18:18 - Rates of reaction
01:20:44 - Reversible reactions
01:26:59 - Redox reactions
01:27:40 - Oxidation numbers
01:38:02 - Acids & bases
01:45:13 - Oxides
01:45:22 - Salts
01:54:38 - The periodic table
01:54:43 - Group I elements
01:58:29 - Halogens (Group VII elements)
02:00:49 - Transition metals
02:00:57 - Noble gases
02:01:07 - Properties of metals
02:02:14 - Uses of metals
02:03:13 - Alloys and their properties
02:04:45 - The reactivity series
02:06:43 - Corrosion of metals
02:08:11 - Extraction of metals
02:14:38 - Water
02:16:42 - Nitrogen & fertilisers
02:18:02 - Air quality & climate
02:27:57 - Organic chemistry
02:34:57 - Fuels & fractional distillation
02:38:53 - Alkanes, alkenes & cracking
02:41:16 - Alcohols
02:45:32 - Carboxylic acids
02:49:00 - Polymers
This is honestly the best IGCSE chemistry video I've ever seen on youtube.
Thank you very much for what you do❤❤
♥️
holy shit it's ronnie coleman
Topic timings:
00:00:32 - Solids, liquids & gases
00:02:40 - Diffusion
00:04:10 - Atoms, elements & compounds
00:05:47 - Atomic structure & the periodic table
00:09:56 - Isotopes
00:10:44 - Ionic bonding
00:18:17 - Covalent bonding
00:21:39 - Giant & simple covalent structures
00:25:35 - Metallic bonding
00:26:38 - Balancing equations & stoichiometry
00:28:57 - Writing the formulae of common compounds
00:33:30 - Mole calculations
00:53:40 - The Avogadro constant
00:56:28 - Electrolysis
01:09:43 - Energetics
01:18:12 - Physical & chemical changes
01:18:18 - Rates of reaction
01:20:44 - Reversible reactions
01:26:59 - Redox reactions
01:27:40 - Oxidation numbers
01:38:02 - Acids & bases
01:45:13 - Oxides
01:45:22 - Salts
01:54:38 - The periodic table
01:54:43 - Group I elements
01:58:29 - Halogens (Group VII elements)
02:00:49 - Transition metals
02:00:57 - Noble gases
02:01:07 - Properties of metals
02:02:14 - Uses of metals
02:03:13 - Alloys and their properties
02:04:45 - The reactivity series
02:06:43 - Corrosion of metals
02:08:11 - Extraction of metals
02:14:38 - Water
02:16:42 - Nitrogen & fertilisers
02:18:02 - Air quality & climate
02:27:57 - Organic chemistry
02:34:57 - Fuels & fractional distillation
02:38:53 - Alkanes, alkenes & cracking
02:41:16 - Alcohols
02:45:32 - Carboxylic acids
02:49:00 - Polymers
02:59:51 - Experimental design
03:02:46 - Acid-base titrations
03:07:48 - Chromatography
03:09:40 - Separation & purification
03:12:29 - Identification of ions and gases
my test topics ->
00:00:32 - solids liquids and gases
00:02:40 - diffusion
00:04:10 - atoms elements and compounds
00:05:47 - atomic structure and the periodic table
00:09:56 - isotopes
00:10:44 - ionic bonding
00:18:17 - covalent bonding
00:21:39 - giant and simple covalent structures
00:25:35 - metallic bonding
00:26:38 - balancing equations and stoichiometry
00:28:57 - writing the formulae of common compounds
00:33:30 - mole calculations
00:53:40 - the Avogadro constant
00:56:28 - electrolysis
01:26:59 - redox reactions
01:27:40 - oxidation numbers
01:38:02 - acids and bases
01:45:13 - oxides
01:45:22 - salts
01:55:00 - soluble salts that are not SPA
01:54:38 - the periodic table
01:54:43 - group I elements
01:58:29 - halogens (group VII)
02:00:49 - transition metals
02:00:57 - noble gases
02:59:51 - experimental design
03:02:46 - acid-base titrations
03:07:48 - chromatography
03:09:40 - separation and purification
03:12:29 - identification of ions and gases
total time for this is 1:43:00 hours but it will probably take roughly 2 hours counting pauses
ur tests for which grade?
I usually don’t comment on videos but this video helped me so much, today was my chemistry paper 4 and I aced it after studying for only one night thanks to this video, I’m so confident in what I’m going to get thank you so much, every thing you need is literally in this video
best of luck for paper 1!!!
what was your result?
@@chemicalnamesargon B (79)🙂
01:20:44 - Reversible reactions
01:26:59 - Redox reactions
01:27:40 - Oxidation numbers
Time stamps for me
00:00:32 - solids liquids and gases
00:02:40 - diffusion
00:04:10 - atoms elements and compounds
00:05:47 - atomic structure and the periodic table
00:09:56 - isotopes
00:10:44 - ionic bonding
00:18:17 - covalent bonding
00:21:39 - giant and simple covalent structures
00:25:35 - metallic bonding
00:26:38 - balancing equations and stoichiometry
00:28:57 - writing the formulae of common compounds
00:33:30 - mole calculations
00:53:40 - the Avogadro constant
00:56:28 - electrolysis
01:26:59 - redox reactions
01:27:40 - oxidation numbers
01:38:02 - acids and bases
01:45:13 - oxides
01:45:22 - salts
01:55:00 - soluble salts that are not SPA
01:54:38 - the periodic table
01:54:43 - group I elements
01:58:29 - halogens (group VII)
02:00:49 - transition metals
02:00:57 - noble gases
02:59:51 - experimental design
03:02:46 - acid-base titrations
03:07:48 - chromatography
03:09:40 - separation and purification
03:12:29 - identification of ions and gases
01:58:29
Oh my days you are literally saving my life Hazel. Thank you so much for this
Thank you SO MUCH Ms Hazel!! This was incredibly helpful and I was finally able to understand polymerisation (I asked my chem teacher many times but still didn't understand). Thanks again for makiing such a clear and consise video!💗💕💗
video reached faaaar beyond my expectations. DID NOT EXPECT A LITERAL PRACTICAL DEMONSTRATION FOR THE EXPERIMENTS. This helped me a ton! I think i am prepared for my IG CHEM exam tomorrow
I had no idea what the alkanes part until you showed how it worked and every just clicked, thank you
Thank you infinitely for these videos, Miss Hazel. I have 20 days left for my mock exams and felt sooo overwhelmed by all the information in the textbook that i thought i had to absorb, but you included all of what i learned within 2 years in a 3-hour video , in an easy to digest format, God bless you ♡
Awew tysm! And good luck in your mock!!
I'm going to give my chem theory exam in five hours, and just wanted to thank you for making such a helpful video
Hazel thank you so much for your hard work. I really appreciate it. You summarised a year into 3 hours. God bless you❤❤❤
You are so welcome!
@@SciencewithHazel is that all of die?thx
❤
Greetings Miss Hazel
I would really like to appreciate you kindness and upload revision videos
these videos are really going to get helpful when I write my IGCSE's in May June 2024
You are really the best coz you explain better that my teachers, and did I tell you that you have the sweetest voice?
Love you again
🧡🧡🤟
@sjsjsjjm mswmswmsw lol
Thanks to you I got an A*! Your saving lives!💓
Congratulations
watching this quite literally 4 hours before my finals
Yeah it's a bit too long
How did it go??
@@babyoil00 I got 76/80 :) (istg I hadn't even studied the whole year)
@@theoneandonlyweirdbarbie omg congratsssssssssssssss (lmao, well it doesn't matter if you're smart enough to get it all at once👏)
@@babyoil00 haha thanks. I'm shit scared rn. Boards in like 6 months😭🙏🏻
Thank you sooooo much. I literally learned 4 years of school chemistry in 3 hours. You are my hero💛💛
❤️
Hi hazel! I finished my Igcse today and came here to say thank you🫶 ur videos helped me a lot throughout my school year till my finals and I am so glad that I found ur channel. I hope u will keep doing this. Words can’t describe how thankful I am right now. I would not be able to pass through this year if it’s not because of you!thank you so much!! I wish all the good things will come to you, take care and stay healthy and happy!
Awww tysm!!! I'm so happy to hear that my videos have helped! Wishing you the best of luck in all your exams!
The perfect guide for sure. It really helped me understand chemistry much easier than how my teacher teaches at school. I really appreciate your hard effort made for this video. Hopefully I pass my chemistry exam. 🙏🏼
woooo now time to study this like crazy
Wow💥💯🥰Am a Nigerian student preparing for an exam and this actually helped me in understanding alot💯
♥️
bro i swear ive been battling with chemistry for like 2 years this video just broke everything Actually underrated content
♥️
@Science with Hazel hello,in 2023 will be given the identification of ions and gases tests in exams paper 6?We don t need to learn it?I keep hearing different things.
@@centric145 we will be given that in paper 6 but we still need to memorise them for paper 2 and paper 4
@@jahnavikakhani4583 😒
@@jahnavikakhani4583 will it be like this for the Feb/March exams as well?
I am studying in 8th grade and I was finding igcse chemistry really hard and I just watched this video and this has helped me a lot in my chemistry revision.
Thank You.
Amazing! Tysm
I found your resources today ,and I am finding these useful. BTW tomorrow are my exams.
Been stressing over chemistry for the past year and now finals are coming up. You are a life saver, this video is helping me so much!!❤
I love the easy to follow descriptions and the words on the screen for me to note down😊
Awww tysm! Good luck in your exams!!
just wanna say thank you so much i was losing hope in chemistry but this helped me so so muchh my igcse chemistry exam is in a month thanks to you its more understanded
Good luck ♥️
sameeee here!!! ahhhhh
@@deadricxshoe me toooo eeeeeeeeee
@@deadricxshoeHOW WERE UR RESULTS
@@rashidahmed3945ur resultsss 🙏🙏
Even though I'm not rushed like some of the viewers, my exam is in more than 50 days, but I thank you so much. Truly, thank you. You don't know how many students you saved from failing. Some of us, like me, love chemistry and understand it but our teachers aren't good at explaining
Thank you so much Hazel. I started January and I'm writing core Bio and Chemistry in May june. So I keep on repeating your video
Good luck!
THANK YOU THANK YOU THANK YOU. I have my chemistry paper 4 o levels in around 25 days AND YOUR VID IS THE ONLY THING SAVING ME.Thank you soo much.
same
hi hazel, i am a private candidate and i sat for oct/nov session for igcse. i only used your videos for preperation and i covered everything under 3 months and i got an A* in chemistry and physics and an A in biology
thanks alot for posting such content for which any other person would charge but you do it for free thanks alot .i appreciate your hard work from the bottom of my heart
God level teaching. Thanks for rescuing me an A* on an internal test
You're welcome! Congratulations!
hii hazel could you please make a video telling us common questions in paper 4 0620 it would really be of help duringrevision for igcse
Thank you so much for this video exam is in 1 hr and I just finished revising completely for paper 2
If I dont pass I am going to sell my soul to Hazel in hopes of the bonds holding my molecular structure together evaporating; causing me to fall apart at an atomic level.
Today I was studying about electrons and elements for 2 hours but you summarized everything I needed in 2 minutes 😭 I can't comprehend how kind and big a human heart must be to take time and effort to help people struggling with studying and procrastination. Thank you so much! You were so helpful and straightforward. I really thank you from the bottom of my heart
Awwwe tysm! I'm so happy my videos help!
Thank you for what you did, Honestly this helped Alot, My exam is in 3 Weeks and I'll sure return to share my result
u didnt return???
@@DayyanRaja8816sorry I forgot, I got an A in chemistry
ggssss welll playeddddddd. hope u do amazing in a levels as well, best of luck@@azanamirr
thankyou so much, i used this video during my 9th final and got a B. the intersting part is that i started studying chem for the first time basically in 9th, now im also using this for my upcoming board exams.(india)
loved this so much great help!!!
This is really good but I find that the video quality is a bit low so I cant really make out some of the past paper questions like in 1:12:25 is it possible to change this?
Had my chem paper today it was so damn different from the paper pattern electrolysis didn’t come and there was like 3 mark mole question and 2 marks related to avagandros number it was maily metals and haber process
1:54:38 ~ 2:27:57 skipped, Organic Chemistry start (dont mind this just my notes)
Polymers is the only topic left apart from skipped parts
YOU LITERALLY WORK MIRACLESS!!
2:00
Element compound mixture
(Ignore this, its my own reference)
btw guys,
electrolysis of aqueous solution
concentrated aqueous - halide formed in the anode
dilute aqueous - oxygen formed in the anode
i think the video says that always halide is formed...i think it needs correction :)
yes you are right
I honestly really enjoy your videos so much but could u please please please make videos like these for Cambridge A levels? I’d really really appreciate it for an eternity, genuinely! 🙏
4:23 i think its 1.99 grams here to three significant figures, as you only need to round the 1.98. --» 9. = 1.99
thankyou so much, you've helped me so much. I've been following you for 2 years now and i'm so glad i did. thankyou for saving me.
♥️
OMDS THANK YOUUU. BRO I USED TO THING PAPER 4 WAS HARD BUT I WATCHED ONLY YOUR VIDEO AS REVISION AND I ACTUALLY UNDERSTOOD IT, I THINK I'LL DO WELL IN THE PAPER THANKS TO YOU!!!
needed this so badly
thank you so much
You're welcome!
Session 1: 24:55
Session 2: 40:28
THANK YOU YOURE AMAZING
1 STATES OF MATTER
00:00:32 - Solids, liquids & gases✅
00:02:40 - Diffusion✅
2 ATOMS,ELEMENTS AND COMPOUNDS
00:04:10 - Atoms, elements & compounds✅
00:05:47 - Atomic structure & the periodic table✅
00:09:56 - Isotopes✅
00:10:44 - Ionic bonding✅
00:18:17 - Covalent bonding✅
00:21:39 - Giant & simple covalent structures✅
00:25:35 - Metallic bonding✅
3 STOCHIOMETRY
00:26:38 - Balancing equations & stoichiometry✅
00:28:57 - Writing the formulae of common compounds✅
00:33:30 - Mole calculations
00:53:40 - The Avogadro constant
4 ELECTROLYSIS
00:56:28 - Electrolysis
6 RATE OF REACTION
01:09:43 - Energetics✅✅
01:18:12 - Physical & chemical changes✅
01:18:18 - Rates of reaction
01:20:44 - Reversible reactions
01:26:59 - Redox reactions
01:27:40 - Oxidation numbers
(for my reference)
it is very nice video. i am sure it transform me from A to A* student. but i have one comment if you use subtitles in the video it will be better than now.
THANK YOU SOOOO MUCHHH. You are truly an amazing lifesaver 💖
43:01 onwards until the end of stoicheometry very important for IGCSE appeared for me a lot in the exams.
@megacup3977 Could you give me some tips to memorize faster
Idk lime this formula is like if it were the speed = distiance/ time of chemistry, it is fundemental for all stoichometric questions, you need to remember that mass will always be divided by the Mr, to give you the moles, in IGCSe the moles normally gives a small rounded unit like 0.01 or 0.005 or 0.1 or 1 its normally small units no needing to round it. THE MR is important to know how to cauclate which is getting the mr of each elment present in the formula, for exampl H2O Mr is O(16) +H2(2*1) = 18@@VelAqua
Thanks hazel! my exam is in 5 hours
May God bless you in every way because you dont know how much you helped me
😂😂
thanks so much for this!
Exam is in two day so stressed i really appreciate your video it helpes me alot thank u for the awesome explanation ❤❤
Same bro, me looking at this video before 1 hr of the exam.i wish I came across this a long time ago
28:50 balancing when you added 2 on the left side shouldn’t the oxygen’s be 7 and not 8
Very helpfull thanks!
when will u be uploading the physics all in one video for 2023 onwards? just wanted to know because these videos are super helpful and I have a test coming up soon :)
exam is in a tmr at 8 am, itis around 9 pm rn, I am sure i can watch this video a couple of times before the exam
1:03:23 You forgot to mention one thing, here in electrolysis, if the solution with a halide is dilute, then the OH molecules would be discharged (as water and oxygen) rather than the halide being discharged.
Yesss..!
hello there. I know it's 2 years later. however can I ask why we increase the temperatures? would that not mean the equilibrium goes to the endothelial? 1:24:28
Im so confused 2:46:00 shouldnt the general formula be CnH2n-1C00H I know its not your formua but i have read in other parts but that doesnt make logic
The organic chem explanation is just perfect
♥️
Isn't the hydration of ethene reversible? 2:45:03
taking my Chem M/J in 3 hours. Tysm for this video!! 🥹🫶🏻🫶🏻
Good luck!!
56:10 I can't quite get what's going on here.
if you want to find out the amount of atoms of oxygen in 3 moles of glucose, shouldn't it be (1.806 * 10^24) * 0.25? Why do you multiply 6 on the value of no. of molecules?
Because each molecule of glucose contains 6 oxygen atoms
thank you so much i am so grateful 🙏
You are so welcome!
exam tomorrow, only got 7 months of igcse education, this is my last hope 😭🙏
same bro it's 1:19 am still studying😭😭
@@HeyImYaz me and you both 😣 goodluck!!
2more days and two more exams(ig)then free💀 good luck y’all!
@@y5okiiii mcq sucks like its going to be hard compared to last year fm
just a random ig student after i ve found this i recommend it to my friends and we all love this, no cap, we love it
01:35:17 here the overall oxidation number of na2o is not 0 because -2+1 = -1
can you explain this? it will help
There are 2 sodiums (2 X +1 = +2)
THANK YOU SO MUCH MA’AM YOU’RE AN ANGEL ❤❤❤
❤️
Hi Hazel. Your videos are incredible. I just have one question 😃. Do you have any planes to upload the A level and IB Physics video, or have you already uploaded it? I can't seem to find it. Thank you
Did you find any for a levels??
just did my chemistry theory exam a couple of hours ago and I have to say THANK YOU SO MUCH WITHOUT YOU I WOULD'VE BEEN DONE FOR BLESS YOU FOR HELPING THOUSANDS OF STUDENTS FOR FREE
You're so very welcome!!! I hope it went well x
yo what was the details of the exam?
@@SciencewithHazel thank you
@@tinahaidary8002yo what was in the exam?
@@snyinnit wait didnt you already do it if you're IGCSE
thank you so much genuinely
Haber's and contacts process
Good luck for all my internet homies taking Paper 2 tomorrow 🙏
Edit: paper went smoothly thank goodness just 1 more paper to go
I have my exam tmw pray for me!
me tooo
THANK YOU!!!!