GCSE Chemistry Revision "Electrolysis of Aluminium Oxide"
ฝัง
- เผยแพร่เมื่อ 3 ต.ค. 2024
- GCSE workbooks www.amazon.co....
School licenses from 40p per copy www.freescienc...
In this video, we continue looking at electrolysis by exploring how we extract the metal aluminium. We look at the reactions at the cathode and the anode and then explore some specific details of this process, including why the anode must be replaced regularly.
This video is based on the AQA spec. If you are following a different exam board then you should check your specification. The Amazon link above is an affiliate link. This provides a small commission which helps to support freesciencelessons. The cost remains the same to you. If you prefer not to use this, you can search Amazon for the Freesciencelessons workbooks.
Image credits:
boeing 747 (By Adrian Pingstone (Own work) [Public domain], via Wikimedia Commons)
Coke can (By M0tty (Own work) [CC BY-SA 3.0 (creativecommons...)], via Wikimedia Commons)
aluminium oxide (By Ondřej Mangl (Own work) [Public domain], via Wikimedia Commons)
I’m watching all the ads cause this guy deserves it. You seriously don’t know how many people you’ve helped. Thank you.
still aiding failing students in 2019. Bless your soul
how do we have the same banner
Marco Jacklin lots of people have
That banner
and 2020 now :))
and 2023😭
2023
Remember guys,
“I’d rather get an A(node)+ than a C(athode)-“
Thanks. I was just wrecking my brains trying to come up with a memonic
Orrrr PANIC (positive anode negative is cathode) in exams lmao
WOWWW
@@leiagaddu196 oh yhhh lmaoo
you can always use PANIC: Positive Anode, Negative Is Cathode
You are an absolute life saver. I got to understand these stuff only after watching 2 of your videos. May God bless your soul for helping innumerable students across globe. Please continue supporting us ❤
Thank you sooo much sir ❤
If I pass my science GCSEs through all this COVID stuff, this guy is the reason.
did you??
Freesciencelessons, to be honest, you're the best
Thank you. I appreciate your comment. Good luck in all your exams.
Stop reading my comment and get back to learning from this British national treasure
Absolute life saver, I got a star in my mock,
well done
That is amazing, God Bless truly
Well done honestly
Do you remember any question in your mocks about electrolysis? I have my mocks coming up and I’m not the best at this topic. Thanks
Alslalsl Asd Solve past papers.
Freesciencelessons i love the fact that you teach a whole topic under 5 mins you are so informative and the best science teacher. Thanks
OMG LOVE YOU MAN U R THE BEST U NEED AN AWARD FOR THIS, I WAS SO CONFUSED ABOUT ELECTROLYSIS BUT U MADE IT SO SIMPLE LOVE U!!!!!!!!!!!!!
Thanks for the comment. Electrolysis can seem tricky but it's straightforward once you get the ideas.
He replies so nonchalantly just like he speaks
Love this man he made me go from grade U’s and 5’s to a grade 6, 7 in the mocks. I think I’ll be able to get grade 7,8 in the real exams! Thank you so much I really appreciate it
that’s so amazing man help me please. i got a 5’5 in my mocks cuz i had to do foundation but now i’m doing higher. after u watch the vids do u do exam questions
@@hi-pg9bp yes watch his videos, make sure u've covered all the points from ur board specification and then go over past papers. at first, u might not be able to answer the questions confidently but don't lose hope, go over markschemes, identify ur mistakes and keep doing past papers! u'll eventually be really confident in the end. good luck!
@@birdie7344 chemistry paper on Friday it’s sooo hardddd
@@birdie7344 THANK uuuu i didn’t see this comment sorry !! but we have chem tomorrow good luck 💕💕
how did u do?
sir i must just say your students must adore you because you have given them all these tools they can use in school while helping us at the same time wow
your vids are so helpful, hopefully i can get least a 7-7 in my gcses because of you.
I'll update, when my gcses results come :)
Girl what did you got
You're so good please continue
Thanks for the videos if it wasn’t for u I wouldn’t have a career
Paolo Farina a career in what
@@suleiman1653 oh yeah yeah
what career do you have
What career? Please tell me I want to know now right now now please
You people are creepy leave him alone
this man is a national treasure
I seriously hope this guy understands how much he has helped students.
I used to be very bad in chemistry but thanks to u I have got an A this semester. Appreciate ur work
Thanks for the message. I'm happy to have helped.
Thank you so much sir, you are the best teacher, so happy to have you and we all l students love you so much. You are a lifesaver wallahi. Lots of love 💖 ❤️❤️❤️ and you are a hero 🏆🏅🎖🥇👨⚕️👌🙏🏻
Thank you, I really appreciate that. At this stage, I'm coming towards the last section of videos and am starting to feel like I've not stopped working for about a year, so your comment gives me the energy to keep at it.
Freesciencelessons we should thank you sir 🙏🏻 and you deserve to be appropriated 🥇🏆
Honestly amazing , one of the few people deserved to be called a teacher
You deserve my first born child
lol
Dont u think that's a bit too much tho
LMFOA
You made this at the perfect time, we're doing our end of year tests to decide what sets we're in, thank you!
Its christmas eve, and here i am, stressing about my mocks
Wish I revised earlier😂😂I’m going through the whole chemistry playlist. Pray for me😂
How did it go?
@@asanda1789 i am also invested....
@@cia_di same-
@@cia_di has there ever been a time when someone's actually given an update
@@marceledeko6030 im bouta go in for a mock exam tommorow and allreday know i failed
I do triple science, and i've struggled with this topic the most, you've literally saved my grade
Thankyou so much for these videos you make my life worth living! Your my hero and inspiration making me want to become a teacher! Do you have any merchandise or thinking of making any ❤️❤️❤️
Aww
This is amazing
Tom Veness make your life worth living?😂
I want merch
@@shaheer_04 im doing my gcses at the moment, and If I dont understand a particular topic; I too lose my purposes in life lol
i used to find electrolysis SO FRIGGIN HARD but now I can conduct this information into my exam easily!
You are saving my gcse's. I thank you Sir.
*Definitely would recommend your videos to friends. They are so useful.*
His introductory smile is priceless! I love this guy!
and his ending smile
This guy has taught me more than my actual chemistry teacher. Then again this guy isn't a useless git.
It's harder to teach a class than online, but I can't lie this guy is better than any of my teachers combined too even if it was 1 to 1
honesty such a legend, you've taught me more than my chemistry teacher has. Thank you so much!
Thank you for actually making panicked students understand such a tricky topic
Oxidation occurs at the anode and reduction on the cathode. Learn it like : An Ox
Red cat.
This guy single-handedly taught me a couple months of work in only a few hours. I am so thankful for your work it honestly saves me
Lol still saving grades in 2024 what a legend my grandkids will probably still watch this amazing man's videos thank you sir
This guy only thing keeping me going in 2020🥺
Cations (positive ions) are attracted to the cathode (negative electrode). Anions (negative ions) are attracted to the Anode (positive electrode). I guess it's easier to remember when you think about it from this perspective
Thanks very useful, got mocks this week so hopefully this helps
Thanks for the comment. Good luck in your mocks.
I have mocks and Cambridge exams beginning this Tuesday.
This is so helpful thank you! I just have a question. When I learnt this at school, we were taught that the cathode is the cell lining in a steel case but when I have come to revise, my revision guide and here is different. I was just a little confused about which one I should learn and if a question came up on the test which way would I explain it?
I also just want to say thank you so much!! You have helped me so much so far and I will be definitely rely on these videos when it comes to next year :)
Saw this cheeky codger chilling in the pub the other night downing a pint. What a lad !
Thanks for taking the time for making these video.My daughter watched you last year and got an A. Now doing A level. I'm sure you helped!
OIL RIG
oxidation is loss (of electrons)
Reduction is gain (of electrons
5 years later still the king
Hi sir, I find your videos very useful. My exam board is the WJEC and I find that most of the videos from the AQA syllabus are co-ordinated with the WJEC syllabus. Would you mind creating a video on Newton's three laws of physics as I believe you are the best person to teach me!
I find these videos so helpful, feel life-saving, thanks so much !
You've helped me so much with science I cant thank you enough
Also sir, please consider designing textbooks with all these notes in it. I swear by ur people that we will all purchase them
Thank you so much sir. You have helped me understand these soo much better than my teacher. We all majorly appreciate it
Excellent videos , well explained and immensely helpful please keep on adding 9 -1 videos thanks
while we were all enjoying star wars day in 2017, little did we know shaun was saving out gcse's ...
remember guys :
OILRIG : Oxidation Is Loss (of electrons), Reduction Is Gain (of electrons)
I wish you did a level chemistry
HE SMILED AT THE START OF THE VIDEO
Paper 1 Friday
Maybe you should do like a full revision guide for 3 Science Subjects; Physics, Biology, Chemistry!!!
His smile at the end is always so cute 😭
I learnt more from this than my term of trilogy science
I'm glad that my videos are helping.
GCSE tomorrow bois
what you get?
As long as you don't tell us what you got, the illusion is not broken.
Really love your videos and so does my Turkish physics teacher.❤
so does my korean chemistry teacher
So does my Jordanian chemistry teacher
so did my korean physics teacher
Ur gonna be the only reason I get a 6+ in my GCSES
ur a legit legend
Sir, I am very thankful to you.
Respect to this guy !
A hero of our generation
Thank you so much, very helpful video 👍
This guy combimes 'Individual learning' and teaching a big BIG class simultaneously and efficiently.
better than a 9 hour lecture
Quite professional thank for sharing. Is there any example for energy consumption to convert 1 kg al2o3 to aluminium and other expenses including the catalist cryolite.
These videos made by day.
How do we know the charge on each atom
Group 1 ions have a 1+ charge and group 2 ions have a 2+ charge. The aluminium ion is 3+. Group 6 non-metal ions have a 2- charge. Group 7 non-metal ions have a 1- charge. Any other ion that you need for these type of question will be given.
saving gcses in 2021 lets gooo exams next week thx a bunch sir
thank you sir
No problem and thank you for the comment. I appreciate it.
Freesciencelessons would electrolysis be the same for copper sulfate to extract a pure sample?
Can somebody just give this man a knighthood already?
oh boy free science lessons
after watching this Electrolysis is calm
not me doing last min revision since I had 4 exams in just 2 days and couldn't catch up with chem
God bless this man
Sir can u share more information about it😊
I will update this comment on the 22 on August with my results.
Prediction: 8,8
im calling 6/7 for myelf, i do triple
Great lesson! Thanks!
Sir ...Great video. Can you please clarify (with an explanation) if this reaction is exothermic or endothermic? Thank you.
Electrolysis is endothermic because it requires energy from the surroundings, he states it in one of his videos
Good luck to everyone doing chemistry tmr! ❤
A BIG thank you!
Thank youu sooooo much you saved my igcse
Legend.
Fun fact: you are also reading the comments instead of focusing on the vid and studying.
my G
very well explained thank you very much teacher
For the half equation for oxygen, is the correct answer not O*2_-O2+4e*_
I'm confused how can Al 3+ gain 3 extra electrons and be neutral it will have 15 electrons now. Shouldn't it lose 3?
I know where you coming from, however you need to remember that electrons are negative. So when it gains the three NEGATIVE electrons it cancels out the 3+, as 3-3 is 0.
I love this guy.
sososo helpful thankyou so much for these vids
Just a question for 0xygen minus why is adding an electron and not minus?? Or do we n ok t need to know but just memorise it
Sir so tell me what was your real motivation whilst starting this channel ?😊
I have a question- why do we need to double the equations? (3:35) and do I need to double the equations in the exam?
We need to double the equations because the gases produced (eg Cl2, O2, H2) are all diatomic molecules (ie have two atoms in the molecule). So we cannot show the equation for just one atom as that would be inaccurate. You would be expected to double the equation in the exam.
thankyou so much !!! ur saving my chemistry grade haha
You are the best guy
can you please make a video about extraction of zinc (zinc blende) with electrolysis.
Zinc blende is extracted in a blast furnace
Thanks!!
No problem. I hope that you find the video useful.