GCSE Chemistry - Elements, Isotopes & Relative Atomic Mass #2
ฝัง
- เผยแพร่เมื่อ 13 ต.ค. 2024
- This video covers:
0:16 - What an element is
2:23 - What isotopes are
3:37 - How to calculate relative atomic mass
This video is suitable for:
All tiers
All exam boards
Triple and combined science
Related videos/topics:
The structure of an atom - • GCSE Chemistry - Atoms...
GCSE Chemistry playlist:
• GCSE Chemistry - Atoms...
GCSE Biology Playlist:
• Video
GCSE Physics Playlist:
• Video
After two and a half years of putting off revision, and my GSCEs coming up in less than five months, i really appreciate this video. But listen, don't do what i did, if you are in younger years, i beg of you, start revising because i have never felt so stressed in my life :)
its been 8 months since you commented that, did u do well in ur GSCEs?, I hope u did.
how did you do in your gcses ?
I'm doing the same thing right now, its bad
Started revising 10 days left I'm fine
@SSJMasters bro ur gonna fail
So in a seven minute video, I learned more than what the teacher took an entire period to teach us, and this guy taught it much better than the teacher!
I learnt more than what i learnt in an entire term
me tooooo
and becuse of you i get the high in my class in math and since
@@nehmiya2.0 since lol
Wimp womp
I’m in year 9 and because I’m someone who bases their learning off of understanding rather than just knowing a simple answer, this really helped me because my teacher just told us all we need to know is the definition, ‘same number of protons, different number of neutrons’. As I’m doing the higher paper for my test next week, I find this super helpful.
Amongus sus
same here in terms of learning! i feel like it's a waste of time if i just know what the answer to a question is, rather than actually knowing why that is - which then helps me apply this knowledge to other questions (*¯︶¯*)
@@Gabriel-zy6xv thats kinda sus 😳
Chloe hows it going with ur revision
are u home schooling
I’m a fool who had been paying school fees just to get hated by teachers. This is free, short, better and available all the time. Thanku so much Cognito!
Respect man your really helping a lot of students with their exams
thats true
Yep so true
Thats why I'm here lol
With our knowledge*
@@Ohmagat69420 ahh your pfp got me there
These videos are so useful and these will really help me do well in my gsces. Currently I'm in year 10 and I really want to do well so I have started revising early. I don't really learn a lot from reading or writing , I'm more of a visual learner (I learn better from watching videos) so these helped me so much and I'm sure so many people watch your videos and learn a lot. Thanks so much I really appreciate all the effort you put into your vids❤️
Hey Tappz! Thank you for such a lovely comment! Really appreciate you taking the time to let us know the videos are helping you out (and of course the comments help bump the videos up which is great for us!) Hope all your work goes well!!
Yea I'm year 7 and I want to revise early so that when I get to doing my exams in a few years it will be way easier. :)
@@jaydenmcevoy6760 smart kid
@@jaydenmcevoy6760 wish I did this ahahahha GCSE are hard af
@@jaydenmcevoy6760 there's early then there's this early jeez I'm year 11 I haven't started yet
hi cognito!! i’ve back here again for the third time, i have mocks in a month on paper one for chem and these will finalise our science pathways, you’ve already helped me get moved up to do triple, and now you’ll help me stay there. Your videos are such a big help to me, thank you so much for posting these videos!
I am a 9th grader in Turkey. I am watching this to study for my chemistry exam and also to prepare for the AP biology course. Thanks so much for this. 🙏
For anyone who is below yr 11, or even in the beginning of yr 11, start revising now , currently the day before my chem paper 1 and I’m stressing tf out, just started revising today after my maths paper
Wish me luck 😭😭😭😭
i know i wont get a reply but how'd that paper go (asking cause i just hit year 11) and i feel cooked
@@gooduser111 hi 👋
It actually went rlly well, I did foundation and got 5 which is the highest i could get, and yes 100% like I said the earlier you start to revise, the more chances you have of getting to do the higher paper and getting 7s and above
Good luck this year ❤️
Amazing video! I’m confident I can now explain ‘relative atomic mass’ to my daughter. Thank you 🙏
Hi Sian! Thanks for the comment and really happy to hear it made some sense haha! Hope your daughter finds it fascinating 🧐
I've used ur playlist for my mocks, I'll tell you how I did after I got my results
What I got for BiologyP1=grade 8, Paper 2=grade 9, Chemistry Paper 1=grade 8,Paper 2=grade 8, Physics Paper 1= grade 7, Paper 2=grade 9
Holy crap that’s so good
@@Tdoongie22 Thankyou so much
That is amazing A job well done
@@mutinycreator thankyou!
I'm about to start 10th grade next month, and I really struggle with Chemistry. I recently watched a video suggesting that I target my weaknesses before going back to school so that I am prepared, and that's where these videos come in. These videos have been incredibly helpful, and I can't wait to get back to school and show off how much I know about Chemistry lol.
Awesome videos! Never stop doing this, Tom and Amadeus! You guys have no idea how many students from all over the world are dependent on you!
You are the best teacher I have ever seen.
I have my GCSEs in a couple of weeks and this video really helped me and your website really helps me learn but the one thing I wish you guys would improve is having short notes in your website along with the questions flash cards and videos. But I am really grateful to have found this channel. Thank you for the effort you guys put into these videos... It made learning chemistry that much more fun.
Same here with the GCSE's!! Im in year 11 too x Hope all goes well for you, lord bless you x
@@animallover630yo what happened u did good?
Hey, thank you! Yeh it went great, better than I expected! x@@justbebo4987
helloes cognito :D
thank you so much for your work!! My science teacher confuses everybody in grade 8, but most others have tuition to help them along, so I don’t understand anything which goes on in science..
My science teacher said recently that I was going to fail my EYAs (end-of-year exams) and I’m all hopped up on spite to prove him wrong, but didn’t know how.
Your videos are my saving grace. Thank you so much
Great explanation! One question though, how will we know the abundance? Will it be given in the question?
I can never thank this man enough ❤
I have igcse exams in 4 months, and Cognito has really helped me with my studies. Some time ago i didn't know how to balance chemical eqauations, But cognito made everything seem so easy😊
how did they go?
failed each and every paper
I heard that the boundaries were changed
hello cognito!! i have written tons of thank yous after my 3 major exams which determine whether i do triple or double science
today was the day i got the email and i did end up getting triple science
but i have to give you a big thanks for helping me passing those exams to get into the pathway i wanted
thank you so much cognito i am so happy!!! i wish you all the best with your channel
Ah wow Dvrina, congratulations!! 🥳 Really glad to have been able to help you with those exams, thanks for letting us know! 🤩
Mine is on the 13th hopefully I get triple
@@ravex5169 u got this!!! i ended up getting triple!!! good luck!!!
@@dvrina thanks hopefully I do
@@dvrina I will let you know if I do
Mr cognito you have changed my life🎉🎉❤
I'm in year 9 and I'm super worried because my exams start within another 4 days we had to learn everything on zoom which is super confusing. I just found this TH-cam channel and I feel ready after watching some of the lessons now . So thanks Contigo for making me confident. .😊
Yo what happened did u pass?
It’s been a decade since I graduated high school and these vids are helping me catch up and prepare for nursing school. Thank you!
Ah awesome, glad we could help you out Hannah, best of luck with nursing! 😊
1 am 13 years and i am writing my igcse in 3 months cognito you are a real blessing
Also me bro I am in igcse
you’re an absolute legend, mad respect. Thank you
this video has really helped i will be able to understand relative atomic mass perfectly thank you
Currently using these videos to learn chem outside of school to do gcse and its helping a ton , thanks
That's awesome EXpo, glad we could help you out 👍
Super useful since our teacher refused to explain what abundance is, thank you so much! The visuals really help
these are really easy to understand thanks so much. I really hope i get a good grade on my chemistry exam
These videos are so helpful even as someone who learns a different curriculum. I wish there were videos like these to help students like me in my country.
You’re really a life saver! It’s impossible to understand this in classroom but you make it much more easily to understand
Thank you very much Potato Man 🤩😊
Thank you so so much i did not understand isotopes and got really bad on my test a year ago. now we are doing another test that involves this and now im ready to go! thanks a lot love
i have a question, at 4:06 how did you work out the abundance of copper-63 and copper-65? ( the percentage thingies )
(Mass1*abundance1)+(mass2*abundance2)
-----------------------
100
It’s probably given to u in exam, u don’t need to know it and they generally = 100
Thank you so much for these videos, i can see many people have benefited from them ! i understood everything very quickly, thanks
😄
This is clear, understandable and interesting. There is a point that makes me curious though - how do physicists calculate elements abundance to such a degree of exactitude?
i just started my igcses this week lol I'm taking math/esl/chem/CS/Arabic u teach damn good I'm determined I'll do well, so I'm studying most of my lessons early af into the year. Will update this from time to time!
Update? Its been 2 years how u doing?
@@ΙΓΟΝΨ it was amazing! thanks to him and many online resources i was able to get 9s in every igcse (except arabic). i went on to do alevels and got 3 A*s and 1 B
I'm here studying English and Chemistry at the same time, and planning to watch the "GCSE Biology (9-1)" playlist after, thank you so much.
Good plan that 🙌 hope it all goes smoothly!
woah im surprised by how easy that was for me to understand. thank you!
In an exam would we be told the abundance of an element if we had a question like this come up? Thank you for your videos, they're so helpful!
Great question as my son just asked me same.
Yeah idk I was just about to ask that question, the video is amazing but he doesn't say how we make the abundance ( 4:27 )
your way to taught us this info is too good. man i like it so much thanks for this ❤❤
i am from egypt
Btw your teaching is so good that I am in grade 4 and I am understanding it. I’m not sure if it’s just me or if it’s that your teaching is amazing. Thanks for your help.
Thanks for clearing up what isotopes are!
this is useful because i have a chemistry test tommorow and dont get the topics because my teacher cant explain properly but this is helpin me more so thanks
Only channel in TH-cam that does not require learning in school
YOU ARE SAVING MY GCSES TYSM !!!!!!!!!!!!!!!!!!
thank you so much
i finally get it, these explanations are so clear and easy to understand, thank you
Thank you very much. Your videos are helping me to get the concepts.
I learned way more in 7 minutes than my teacher who took 45 minutes to teach 10% of this. Thank you so much. ☺ Although one question 4:11 will the percentage be given to us in the exam or should we work it out?
The % of the Isotopes has to be given.
Sometimes the may say
75% of Cl is 35g and the rest is 37g
Calculate the relative mass of chlorine ?
So you know if
75% is Cl-35 then
25% MUST be Cl-37
Hence :
75 x 35 + 25 x 37
-----------------
100
= 35.5g
I really love your videos you should have a bigger channel!
thank you so much, i learn more from cognito in a 6-7 min video than the teacher when she takes 2 classes to teach us
gcses coming up in a couple of months. this helps a lot tysm
I’m in year 10 and I find theses vids really helpful keep up the good work 😁👍
Glad to hear it Ount 😊
i have my igcse tommorow imma watch your 67 videos
Bro this man is very helpful
These videos are a massive help to me, helps me get better in class and having a chance of passing my exams, thank you
Thanks Alifeeyy, glad you're finding the videos useful 😊
4:05 4:08 how to find the percentange abundance?
This is great for my Sec 1 exams thanks!
these are sooooo useful, thanks a lot
Happy to hear you think so! Thanks for the support 💛
So underrated channel these videos are too 👍
thank you so so much
TYSMMM I had no idea about isotopes this video is so well taught tho 💕
3.Lithium
4.Beryllium
5.Boron
6.Carbon
7.Nitrogen
8.Oxygen
9.Fluorine
Taught me this on the day of my test
YOOOO MR COGNITO I GOT AN A ON MY SCIENCE TEST YOUR VIDS ARE SO HELPFUL THANKS A LOT!
his 6 hours playlist gave memore information than my 3 years of chemistry in school
im doing igcse but dang is this helpful, thank you !
i didnt know the ar at all and couldnt understand it but when i saw ur vid im really happy i understand now thank u keep it up
Ah great, glad we could help Julia 😊
Absolutely amazing, thank you
Thanks Cognito for these amazing videos 😃.
Thanks for the heart btw
if you edit the heart disappear btw
@@natas6158 Haha dint know that
This is such a brilliant video.
No this guy is good 🙌🏼💯
love these videos, for the relative atomic mass of isotopes, i got 4359.6+2002=6361.6 not 6361.69, u still get the same answer, but have I gone wrong?
thank you for everything, my king
2 weeks till GCSEs time to start cramming
its not just that these videos help in School studying but they are also really interesting
well done Cognito : )
Thanks Johan, glad you're enjoying them 👍
Great video! It really helped me thanks very much!👍
You're very welcome! 😊
This is really helpful when revising for my mock exams. Thank you so much for making these videos!
What do they mean by abundance? 4:10 Thank you guys loads these videos are super helpful
Whoops! Cognito being Cognito answered it :) These videos are truly the best
Hey how did u make ur Yt banner please?
This helps so much thank you!
How do you work out the abundance of isotopes?
.]
@Cognito
@UCaGEe4KXZrjou9kQx6ezG2w
You. Can find it on some periodic tables
cognito has helped me from getting C's to getting A's because his explanation is very straight forward and short
Ah so glad we could help Tawananyasha! 😊
Hello!! Is the whole chemistry syllabus of gcse in this playlist??
Hi Bo, mostly yes - but there are a few exceptions. We haven’t covered the practical tests, and there are a few triple science lessons still to come in the new year! If you’re doing double science though the playlist covers pretty much everything :)
However - make sure you check the specification for your exam board. That way you can highlight the things not covered and be 100% sure not to miss anything - good luck! 🙌
Cognito thankss!!!
Thank you.
Thx u so much u are helping many students in there exam
This is going to be good for my GCSE but one question. WHat board is this for. Mine is AQA.
its for the AQA paper dont worry 😃
Thankyou for making this because our chemistry teacher comfuses us
For eg.
How Many Neutrons does Magnesium has.
We'll look at the periodic table and the Scientific Number of Magnesium is 12
This video was very useful your lecture really helped me as a student!!!!!
You're videos are so helpful, thanks for taking the time to explaining this stuff to ppl like me who r shit in science 😂🖤
SUBSCRIBING TO EVERYONE WHO SUBSCRIBES TO ME its because I make music and I sent a mail to ytb saying that that channel is me with proof and they acceped my request and got verified
I swear 😂✋🏻
These videos are so helpful that it helped me pass my exam, thanks cognito keep it up
Thanks Anas! Well done on your exam 🥳
do we have to know how to calculate the relative atomic mass of an isotope if we are on foundation combined science? Also ty for the vid
hi i really wanna ask and i need a answer soon as my test is in 2 days for the abundance if copper or any element , will the abundance be given in the question ?
yes
How do you know the percentages for the isotope abundance? Does it tell you in the exam?
great work!
In an exam would they give me the isotope abundance when they ask me to find the relative atomic mass or would I need to find it out myself and if so, how do I do that?
Thanks
Thanks so much your so amazing
hey your videos are totally cool but can I know what app you use for video editing.... thanks
Yeah same
This is such a great video, and I'm really grateful for your channel: all the information is laid out in a way that is easy to understand and concise. Thank you for saving us students! One thing that got me scratching my head a bit though- at 5:55 you add 4359.6 and 2002, and the sum you get is 6361.69- I was just confused as to where the 9 came from? When I've added the two numbers in my calculator, it only seems to add up to 6361.6..? :/
same but i think its possible its just a typo cuz calculators never lie
@@mariarashid5808 except the ones that do... yeah, i guess it was, thanks!
thank you for the video