OCR A Level Chemistry 2022 Paper 1 Walkthrough (Periodic table, elements and physical chemistry)

In this video I go through the OCR A level Chemistry 2022 paper 1 (Periodic table, elements and physical chemistry) paper.

I've added chapters to the video for ease of access to the questions you need to go through as this is quite a long video.

[ravaaaa]

Thank you so much, you explain everything really well. deserved my subscribe, keep it going!

[applegoos]

1:06:34 I'm no chemistry expert but i don't think it needs to be a drastic negative to be feasible at all temperatures. Temperatures bellow 0K are physically not possible as it would mean the particles have negative energy so if the required temp is any number that is negative I'm pretty sure its feasible at all temps.

[qafrd]

1:06:40 Its impossible for T to be below 0K. Its like saying particles have -ve KE.
But Thanks for the video! Really helpful

[maxyboy]

For No.10 it says that it’s condensation of ammonia gas, would that not mean that it’s H2(g) + 3N2(g) = 2NH3(g)? Or is my equation wrong?
P.s thanks for the video it’s great!

[kripaupadhyay]

for 7 tho, say we didnt know it was exothermic, how would we differentiate from it being pos or neg

[hxvoc_]

for 1:11:44 why dont we multiply 500 by avagadros constant. Condisering the units its kj divide by mols so to get rid of moles wont you times by 1 mol(avagadros) ?

[anisaxahmed]

This is great, could you do one on OCR B Salters pls

[evangelinepiper]

Why is there not a negative one charge on the empirical formula for thentramsition metal question 2:16

[iwishtobesupernatural]

Thank you. Please could you do one for paper 2?

[bellasophiex]

at 2hrs 6mins why did you multiple mol by 5 for CaCO3 because if its 1:5 wouldn't you divide by 5?

[arellayolanda]

in question 4 as oxygen is O3 why do we still divide it by 32 as we would O2 it really confuses me as surely we should divide by 48

[TommyGee.]

Why does nobody do ocr B paper walkthroughs?

[jasbir]

Hi Can you do the other papers from this year

[masoud]

at 1:04:50 why did you assume delta h = t delta s @ChemKit