Just a note, in the mechanism for the nitration of benzene, the curly arrow from the H to the ring should specifically be coming from the centre of the bond by which the hydrogen is attached. 4:18:24
A question- would you say this video covers everything you need for the spec of OCR A - ik it sounds silly but I'm cramming for paper 3 and would love an answer?
always loved the way you've explained things, been here since gcse what am i gonna do when you're not explaining my 3 year uni course to me in 5 hours tops
Thank you so much!! This was so helpful, I recently started a level chem last September and I was finding it really difficult. Thank you this gave me some hope :)
Wow, that's incredible! Thank you so much. I never imagined I'd learn such advanced concepts in applied science Level 3, which includes A-level chemistry, biology, and physics. It's amazing to have mastered three of the toughest subjects and achieved top grades.
Thank you! The Whole of OCR-A A-Level Chemistry stats It’s 5 Hours long It took 2 months to make It took 7 hours to render The video is 31Gb The render file was 250GB It took 3 hours to upload
@@PhysicsOnline Good afternoon Mr Lewis, I wanted to know if the full video for Ocr A physics is nearly ready as I would love to start revising from it. ( Primrose said it would take roughly 2 months so that why i'm back to get an update :). Also apparently you went to the same school as my teacher Mr Tom Beaney ( well that's at least what he told us)!
do we need to know all of these mechanisms? in the spec I could only see mention of having to know .. - alkene -> alkane - alkene -> haloalkane - alkane -> haloalkane - haloalkane -> alcohol - ketone/aldehyde -> 2-hydroxynitrile - aldehyde/ketone -> alcohol - and then the nitration, chlorination and bromination of benzene thank you for the video its been so helpful!!
whole is completely fucked for the paper tomorrow because they do not know a single mechanism or don't know what the fuck is going on . i'v been chilling even tho i have 3 exams left my brain isn't letting me do work anymore.
This gives me nostalgia from my recision for gcses in 2019/2020 😭.Wish i had this earlier during covid.Missed you so much during my a levels.Im doing veterinary science now and will still be using this video though 😂❤
Omg stressing over my mock! I have about 3 hours to go! Primrose got through my gcses, so I don't know why I didn't come over to here yesterday when I had ages. But i remembered now 😅
Hi, thank you so much for making this video, I'm currently doing my chemistry a level and these recap videos are a lifesaver (I also have watched to OCR bio one!) Just wondering, what is the difference between cis and trans and E and Z isomers because I keep going over it but cannot understand the difference between the two! Thanks 🙌
I may be wrong but E/Z isomers are if the high priority groups are on the same or opposite sides. Cis/Trans isomers are if there are 2 of the same molecule on the same side or opposite sides. E.g. CH3 on the same side is cis
That's crazy. Thank you very much. I didn't except to learn that in applied science level 3 which consists of 3 A-level chemistry, biology and physics which is crazy 😊 3 of the hardest things of my life and was able to achieve the best of the best grades . 3 birds in one stone 😊
Just curious, i havent seen Fehlings solution or test for ethanol at 2:52:00 before, I don't see them on the spec either. Are we required to know this.
I believe the one we need to know (from the spec) is 2,4-DNP also known as Bradys reagent. It identifies the carbonyl group (C=O) in ketones and aldehydes by forming an orange precipitate. You can then test the sample again using tollens to differentiate between the aldehyde and ketone. hope this helps!
@@ahmedsheraz8990 I dont think it hurts to know them as they are similar to other nucleophilic substitution reactions. Probably good practice but don't stress if you don't know them
At 46:30 I think you made a mistake in your calculation as you confused volume with concentation, and I thought you had to times by Mr to get the answer in g/dm^3. My final answer was 266.67 g/dm^3, not 6.68
great video thanks ! In the future for other students i think it would be helpful is you stopped for 5 seconds before moving over to the next slide to give us a chance to read the completed slide. It can be really hard to pause it when you only stop for 0.5 seconds 😅 anyways thanks again great video !
This bootcamp will give you all the teaching videos in order, all the predicted papers, all the video walk throughs and the quantitative chemistry skills lab www.primrosekittenacademy.com/course/aqa-alevel-chemistry-revision-bootcamp
working on it! the predicted papers and walkthrough for CIE come out next week www.primrosekitten.com/collections/revision-bootcamps/products/cie-a-level-chemistry-revision-bootcamp
Hi just wanted to ask what topics are covered in the first year of A level exams? And where can I find the full official specification for OCR A first year chemistry? Also how many exams will there be?
If you’re doing ocr a. From what I know there’s 3 exams. Paper 1 is module 2,3,5(physical chem) paper 2 is module 2,4,6 (organic chem) paper 3 is all modules. Total of 3 exams paper 1 will be I think 8th of June. And paper 3 the last paper of all a level is 23rd June
I'm not 100% sure but i think the definitions for atomic mass and molecular mass or compared to 1/12 the mass of carbon 12 small difference but i remember reading it as a marking point
Relative atomic mass (weighted mean mass compared with 1/12th mass of carbon-12), based on the mass of a 12C atom, the standard for atomic masses, relative molecular mass, Mr, and relative formula mass and their calculation from relative atomic masses
😬 hopefully that won't happen, I made this masterclass to help you, you can get free access to all the questions etc www.primrosekittenacademy.com/course/ocr-a-a-level-chemistry
Wow, that's incredible! Thank you so much. I never imagined I'd learn such advanced concepts in applied science Level 3, which includes A-level chemistry, biology, and physics. It's amazing to have mastered three of the toughest subjects and achieved top grades.
Wow, that's incredible! Thank you so much. I never imagined I'd learn such advanced concepts in applied science Level 3, which includes A-level chemistry, biology, and physics. It's amazing to have mastered three of the toughest subjects and achieved top grades.
3:09:33 - Order of Reactions, Rate Concentration graphs
3:12:32 Iodine Clock, Black cross pags
3:15:33 Rate graphs, half life, reaction orders, k=ln/t1/2
3:17:27 Rate equations and reaction mechanisms
3:18:41 Arrhenius Equation
3:20:00 Mole fraction, partial pressure and Kp
3:22:00 Bronsted-Lowry acid-base equilibria
3:23:19 acid/base/buffer calculations
3:37:59 Enthalpy + Thermodynamics
3:41:19 Born-Haber cycles
3:44:28 Entropy (the bane of my existence)
3:47:46 Redox Titrations
3:55:55 Electrode Potenials and cells
Appreciate it boss❤
Just a note, in the mechanism for the nitration of benzene, the curly arrow from the H to the ring should specifically be coming from the centre of the bond by which the hydrogen is attached. 4:18:24
you just saved me lol
For anyone struggling with A level chemistry, this video is AMAZING. I definitely recommend!
☺
2 years worth of content explained well in 5 hours, what more could you ask for. Huge thank you for saving my chemistry grade 🙏
A question- would you say this video covers everything you need for the spec of OCR A - ik it sounds silly but I'm cramming for paper 3 and would love an answer?
@@tanishabanker4800 Yh, although it feels like Module 6 was a bit rushed
@@Kai.Himself oh right! Thank you so much for the reply!! :))
@@tanishabanker4800 np goodluck with revision and tmrws exam
I'm finished
Ong me too
@@spiderhansomeorganic chem is something I just can’t understand
how did it go
@@cloverc2917 im in uni!! :)
@@dmf19 ooo congrats
LIVING LEGEND! Love this woman 🫶🏾
🫶
This is amazing thank you so much I hope eventually you also make an ocr biology one too but for now this is amazing!
That's the plan!
3:50:00 go over
to do: module 4 and 6
42:00 PAG 2 1:46:00 calorimetry
2:01:00 PAG 9
3:08:00
always loved the way you've explained things, been here since gcse what am i gonna do when you're not explaining my 3 year uni course to me in 5 hours tops
This could be the greatest video on youtube
Thank you!
It took AGES to make, I'd really appreciate you telling others about it so it can get the views it deserves!
Love your videos. But I think at 2:46:55, a secondary alcohol is oxidised into a ketone through reflux not distillation.
Thank you so much!! This was so helpful, I recently started a level chem last September and I was finding it really difficult. Thank you this gave me some hope :)
You got this!
@@Primrose_Kitten thanks you:)
paper 1 tomorrow! thank you!
Good luck!
It scares me that roughly 55 thousand people do A-level chemistry, and more than half of them have watched this before me😭
same here
ONly about 22,000 do this specification!
Great video, small error at 45.25 which could be confusing. Question gives concentration as "mol", when mol dm-3 was intended.
Wow, that's incredible! Thank you so much. I never imagined I'd learn such advanced concepts in applied science Level 3, which includes A-level chemistry, biology, and physics. It's amazing to have mastered three of the toughest subjects and achieved top grades.
How long did this take to film and edit? Incredible work.
Thank you!
The Whole of OCR-A A-Level Chemistry stats
It’s 5 Hours long
It took 2 months to make
It took 7 hours to render
The video is 31Gb
The render file was 250GB
It took 3 hours to upload
Hello Mr Lewis (Physics online), I was wondering if you could do a similar video for Ocr A a-level physics as I found this video extremely useful
@@josiahidowu913 I will do!
@@PhysicsOnline Good afternoon Mr Lewis, I wanted to know if the full video for Ocr A physics is nearly ready as I would love to start revising from it. ( Primrose said it would take roughly 2 months so that why i'm back to get an update :).
Also apparently you went to the same school as my teacher Mr Tom Beaney ( well that's at least what he told us)!
thanks for doing the PAGs too
Getting me an A* in my mocks from an E last time
Well done @chloeparsonage2078 those are awesome results!! I'm so proud of your hard work :)
do we need to know all of these mechanisms? in the spec I could only see mention of having to know ..
- alkene -> alkane
- alkene -> haloalkane
- alkane -> haloalkane
- haloalkane -> alcohol
- ketone/aldehyde -> 2-hydroxynitrile
- aldehyde/ketone -> alcohol
- and then the nitration, chlorination and bromination of benzene
thank you for the video its been so helpful!!
whole is completely fucked for the paper tomorrow because they do not know a single mechanism or don't know what the fuck is going on . i'v been chilling even tho i have 3 exams left my brain isn't letting me do work anymore.
Any chance of an OCR B version of this on the near horizon? Struggling massively with OCR B and the lack of resources!!
Hey! Sorry, we don't have plans in sight for soon, but maybe in the future!
Thank you so much this is a life saver, could you also do one for ocr a a level physics as well
Sorry, I don’t do physics you’ll have to ask Lewis @physicsonline
Oh babes you're spoiling me
😘
This gives me nostalgia from my recision for gcses in 2019/2020 😭.Wish i had this earlier during covid.Missed you so much during my a levels.Im doing veterinary science now and will still be using this video though 😂❤
You got this!
Omg stressing over my mock! I have about 3 hours to go! Primrose got through my gcses, so I don't know why I didn't come over to here yesterday when I had ages. But i remembered now 😅
How did it go?!
@Primrose_Kitten I think I did pretty decent, there wasnt much organic, so I was happy about that, as I suck at organic. Thank you!!!!
That's great to hear! We all have our weak points and strong points - that's why mocks are so handy. Well done 😀
You don't know how happy I am right now 😌 😌😌
🥰
36:00 isn't it over all products not all reactants
due to the law of conservation, if the equation is balanced then the mass of the products is qual to the mass of the reactants.
my paper 3 is tomorrow why am i watching this the night before @ midnight !!!!!
Is there an AS Level version of this???
Module 1-4 is AS. A2 is modules 5 and 6😊
Hi, thank you so much for making this video, I'm currently doing my chemistry a level and these recap videos are a lifesaver (I also have watched to OCR bio one!) Just wondering, what is the difference between cis and trans and E and Z isomers because I keep going over it but cannot understand the difference between the two! Thanks 🙌
I may be wrong but
E/Z isomers are if the high priority groups are on the same or opposite sides.
Cis/Trans isomers are if there are 2 of the same molecule on the same side or opposite sides. E.g. CH3 on the same side is cis
thank you so much! what a legend
You're welcome!
This is amazing thank you
No problem 😊
Does this help in CIE chemistry as well?
at 2:47:30 how does oxygen have 3 bonds?
at 4:46:38 in the top reaction, does the C in the nitrile have too many bonds? I thought carbon could only form 4 bonds
That's crazy. Thank you very much. I didn't except to learn that in applied science level 3 which consists of 3 A-level chemistry, biology and physics which is crazy 😊 3 of the hardest things of my life and was able to achieve the best of the best grades . 3 birds in one stone 😊
Will there be a video for OCR-B
we're working on it!
@@Primrose_Kitten Thank you, that would be very helpful!
I beg you do one of these for OCR B?
Hi @kayleighelizabeth24, this is on my list of things to do and I promise it's coming soon!
@@Primrose_Kitten thank you so much :)
@@Primrose_Kitten how soon is it coming??
@@Primrose_Kitten this would be a life saver pleasee
Hey when will you make an ocr a biology one? X this was extremely helpful ❤
thats what im begging for as well
I'm working on it
Hi there, can I ask what did you say at this time stamp 4:30:53
OMG this vid just came up when I was about to search up a chem vid to revise from
perfect!
Thank you so much for this, truly helpful, liked subbed and shared.❤
This is soooooo helpful 🎉
We're so glad!!
Just curious, i havent seen Fehlings solution or test for ethanol at 2:52:00 before, I don't see them on the spec either. Are we required to know this.
i mean if its not on the spec then i guess not? i was wondering the same.
I believe the one we need to know (from the spec) is 2,4-DNP also known as Bradys reagent. It identifies the carbonyl group (C=O) in ketones and aldehydes by forming an orange precipitate. You can then test the sample again using tollens to differentiate between the aldehyde and ketone. hope this helps!
@@sophiemcnamara4753 Thank you
do we need to know about acyl chloride mechanisms as well its not on the spec
@@ahmedsheraz8990 I dont think it hurts to know them as they are similar to other nucleophilic substitution reactions. Probably good practice but don't stress if you don't know them
you forgot to talk about the limitations of the Ka assumptions + when they break down
and two ways to prepare buffer solutions
First link doesn't work
At 46:30 I think you made a mistake in your calculation as you confused volume with concentation, and I thought you had to times by Mr to get the answer in g/dm^3. My final answer was 266.67 g/dm^3, not 6.68
The Mr is NaOH is 40, thats why i times by that at the end to get g/dm^3
@@Primrose_Kitten So you're saying you didn't confuse volume with concentration
in which part?
@@Primrose_Kitten 46:30
@@josiahidowu913 No she didnt
HOW TO CALCULATE LONE PAIRS???
The whole of the syllabus? In less than 6 hours?
great video thanks !
In the future for other students i think it would be helpful is you stopped for 5 seconds before moving over to the next slide to give us a chance to read the completed slide. It can be really hard to pause it when you only stop for 0.5 seconds 😅 anyways thanks again great video !
Noted!
Can you do the same for OCR B?
Could you do the same thing for AQA Alevel chemistry? I loved the video by the way 💖💖
Here you go ua-cam.com/video/ZJQNjGyMOe8/v-deo.html
This bootcamp will give you all the teaching videos in order, all the predicted papers, all the video walk throughs and the quantitative chemistry skills lab www.primrosekittenacademy.com/course/aqa-alevel-chemistry-revision-bootcamp
please can you do for cie? i have a month for exam please if you could only make this kind of full revision video for cie
working on it! the predicted papers and walkthrough for CIE come out next week www.primrosekitten.com/collections/revision-bootcamps/products/cie-a-level-chemistry-revision-bootcamp
plz make a video on CIE chemistry as well...TIA!
do you know which one ocr or aqa has same syllabus
as cie ?
THANK YOU SO MUCH! ❤❤❤
🥰
25:50 pag 1.1
28:10 pag 1.2
29:40 pag 1.3
Hi just wanted to ask what topics are covered in the first year of A level exams? And where can I find the full official specification for OCR A first year chemistry? Also how many exams will there be?
If you’re doing ocr a. From what I know there’s 3 exams. Paper 1 is module 2,3,5(physical chem) paper 2 is module 2,4,6 (organic chem) paper 3 is all modules. Total of 3 exams paper 1 will be I think 8th of June. And paper 3 the last paper of all a level is 23rd June
Are modules 2 3 and 4 AS content?
yup
you explain all the right things clearly and break them down to be understandable thank you
wowww thank you soo muchhhh!!!!!!!!!
I'm not 100% sure but i think the definitions for atomic mass and molecular mass or compared to 1/12 the mass of carbon 12 small difference but i remember reading it as a marking point
Relative atomic mass (weighted mean mass compared with 1/12th mass of carbon-12), based on the mass of a 12C atom, the standard for atomic masses, relative molecular mass, Mr, and relative formula mass and their calculation from relative atomic masses
Gotten up to 41:00
Hello does this help ocr b students as well
a bit but not 100% perfect
thank you so much!
You're welcome!
THANK YOU!!!!!!
44:00
27:47
Chemistry. Yea he fox walking into a sad detail sands ultimately a grande marriage with you
Thankyou sm schools telling me I’ll have to re do year 13 Lmao not happening
😬 hopefully that won't happen, I made this masterclass to help you, you can get free access to all the questions etc www.primrosekittenacademy.com/course/ocr-a-a-level-chemistry
thanks
You're welcome!
Moshe View
You are quite possibly my favourite person this is so amazing 🥲
Predicted papers, with walkthroughs, and workbooks are all in progress!!
Wow, that's incredible! Thank you so much. I never imagined I'd learn such advanced concepts in applied science Level 3, which includes A-level chemistry, biology, and physics. It's amazing to have mastered three of the toughest subjects and achieved top grades.
Wow, that's incredible! Thank you so much. I never imagined I'd learn such advanced concepts in applied science Level 3, which includes A-level chemistry, biology, and physics. It's amazing to have mastered three of the toughest subjects and achieved top grades.