@MaChemGuy also can I ask for a pH curve, if youre asked to calculate moles of the acid (where base is being added to acid), is it acceptable to just read off the starting pH and use the weak acid formula to work out concentration?
@MaChemGuy sorry ignore me, I said moles but the Q asked for concentration, everyone online seems to have used the half equivalence? I was just a bit lazy and thought this would be a quicker way
hi sir these videos are golden !!! can i ask how would you suggest we can use your videos up until the exams? like the question walk throughs, i wanna know if im using ur channel right :D tyty
So for industry, if you have an equation with solids and gases involved and are asked to comment on the effect of an increase in pressure, do you ignore how many moles of solid you have completely?
Quick question doesn't sulphuric acid only form one mole of hydrogen ions as the first mole of hydrogen ions is full dissociation and the second mole is partial dissociation...
Hi sir Chemistry has always been my hardest subject and i feel like i havent revised enough for it what would you suggest for me to do? Should i just do past papers or focus on content?
You need to focus on both. Past papers are just so you can understand the type of questions and how to respond i.e method of working out. Content always comes up in multiple choice questions. Like you might get a question asking if Mg or Na has a high first ionisation energy. Practice questions and look at the content that will come up
it doesnt matter for a diagram but if its that wierd diagram (sorry i dont know what its called) then its most neg element | most neg ion || positive potential ion | most postive element for example Zn | Zn 2+ || Cu 2+ | Cu where Zn electrode is most negative so its effectivly flipped from the eq you are given in the question hopefully you understand and good luck!
Have you seen my walkthrough videos on Rates? There are a few Arrhenius questions covered. I can always make a one off tips video for Arrhenius if you think it would help?
What a legend never disappoints
Your predictions saved me especially the ph and why a reaction wont be feasible!!
Bro predicted basically the whole paper
real
Come on guyssss we've got this!!
ABSOLUTE LEGEND, THE GOAT OF CHEMISTRY
Thank you sir the support we have had this year has been amazing cant wait to smash paper 1 tomorrow 🤞👍
👊👊👊
Exam in 2 hours good luck gng 😭🙏
thank you so much! you have saved my life todays paper 1 were pretty much similar to your predictions! i’m grateful!
Thank you very much for this! 🙌🏾
goodluck!!
CAME BACK TO SAY THIS WAS SOO ACCURATE FOR OCR
Thanks for letting me know 👍
@MaChemGuy also can I ask for a pH curve, if youre asked to calculate moles of the acid (where base is being added to acid), is it acceptable to just read off the starting pH and use the weak acid formula to work out concentration?
@@stareyedstudygirl I’d need to see the question but it sounds correct. Did they give the volume the weak acid was in?
@MaChemGuy sorry ignore me, I said moles but the Q asked for concentration, everyone online seems to have used the half equivalence? I was just a bit lazy and thought this would be a quicker way
exam tomorrow whos ready !!!
NOT AT ALLLLLL
I'm cooked du
No 🫠
AHHHHHHH
omds stopp
thank u sooo muvh :)
Thanks for the tips! Are these predictions made from the 5 year rule for the papers?
Legend!!
an hour to go, im so scared just gonna watch this video for reassurance :)
Thank youuuu
Thank you so much sir!
No worries. Good luck !!!
Thank you
Please can you do one of these for Paper 2? 🤞🏾
thank you
Thanks dad
thanks
@12:02 do you have to include the negative sign when putting the values in the calculator or is it negative because of the energy?
hi sir these videos are golden !!!
can i ask how would you suggest we can use your videos up until the exams? like the question walk throughs, i wanna know if im using ur channel right :D tyty
Exam question walkthroughs for topics you’ve not yet mastered. Quick revision for everything else for short snappy reminders 👍
dw guys I'll be bringing down the the grade boundariesso you'll all be fine xoxo
So for industry, if you have an equation with solids and gases involved and are asked to comment on the effect of an increase in pressure, do you ignore how many moles of solid you have completely?
Yes
any tips for learning the colours of transition metal compounds?
Use my Quizlet sets
at 13:13 what if the values dont say AfH or AcH how would u get AH? is it just reactant-products. cheers
You’d have to take a simultaneous equation approach
Have they ever asked heterogenous equilibria where you have to leave out solids and liquids in the Kc equation?
Yes
Yup
Quick question doesn't sulphuric acid only form one mole of hydrogen ions as the first mole of hydrogen ions is full dissociation and the second mole is partial dissociation...
Not at A level
Hi sir
Chemistry has always been my hardest subject and i feel like i havent revised enough for it what would you suggest for me to do? Should i just do past papers or focus on content?
I would say content, just watch MaChemGuys quick revision videos
You need to focus on both. Past papers are just so you can understand the type of questions and how to respond i.e method of working out.
Content always comes up in multiple choice questions. Like you might get a question asking if Mg or Na has a high first ionisation energy.
Practice questions and look at the content that will come up
practice papers are essential tbh so u can see how the markscheme is and also get ur timing better🤷🏽♂️
so there will be no AS topics assesed for lots of marks on section b @machemguy ?
Module 2 & 3 from AS are part of paper 1.
did bro make the paper 😭 the goat !! hope paper 2 is accurate as well
Me too!! Hate making those predictions
Do these tips apply to OCR B as well?
Yup
Does the most positive go on the left side of the electrochemical cell?
it doesnt matter for a diagram but if its that wierd diagram (sorry i dont know what its called) then its most neg element | most neg ion || positive potential ion | most postive element
for example Zn | Zn 2+ || Cu 2+ | Cu
where Zn electrode is most negative so its effectivly flipped from the eq you are given in the question hopefully you understand and good luck!
@@mememango4753 thank youuuuu!!
no arrhenius tips 😓, still a legend tho, thank you!
Have you seen my walkthrough videos on Rates? There are a few Arrhenius questions covered. I can always make a one off tips video for Arrhenius if you think it would help?
@@MaChemGuy I would love a quick summary vid of all the different arrangements of arrhenius!
@@kripaupadhyay6596 Can do. Have you seen my quick revision video for Arrhenius?
ruclips.net/video/QFYxnEmVm_A/видео.htmlsi=IcfKKdIB6mW3KvK3
to what extent do we need to know how hetero and homo catalysts work ? thanks
Hetero - ARD
Homo - ability of catalyst to from an intermediate
@@MaChemGuy Thank you sm !
@@momenahmed7070 no problem. Good luck tomorrow!!
Isn’t rates a paper 2 topic?
Not for ocr a
i thought you only needed to know how heterogenous catalysts work? 19:48
Always think application questions. Anything is possible I’m afraid
Will you do predictions for AQA
He’s not an AQA teacher this is for ocr a clearly
For the Enthalpy change of solution question do u have to convert q into kj before you do q/moles since Enthalpy changes units are kj/mol?
Correct
I don't think these tips help get A in exams.
Thanks for the view
are you the teacher with 30 yrs experience
@@idontknow1630 >30 now
@@MaChemGuyfr
Well at the end of the day it’s up to your to smash the exam