FULL PAPER DISCUSSION! - IGCSE Chemistry Paper 4

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FULL PAPER DISCUSSION! - IGCSE Chemistry Paper 4 - 0620/42/M/J/2022 (SOLVED)

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Full discussion of 2022 May/June paper 42 for IGCSE Chemistry.
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Пікірлер: 19

@mattg9171 3 ай бұрын

Thank you sir❤

@shulette8714 6 ай бұрын

you rlly helped me understand the question! great explanation

@retajalrawahi5152 7 ай бұрын

for question 2 d(iv) for calculate the concentration of Ca(OH)2 in 25.5cm cubed of the limewater. i did 0.005/25/1000 just like you but i got 0.2 instead of 0.02...

@igcsewithhan 7 ай бұрын

it is because u used 0.005 instead of 0.0005 ! hope that helps

@retajalrawahi5152 7 ай бұрын

@@igcsewithhan yes I realized 😭

@aaaa-ri8is 13 күн бұрын

29:01 can it be potassium dichromate?

@igcsewithhan 13 күн бұрын

Supposedly can, but since potassium permanganate is a stronger oxidising agent it is a safer answer. They didn't accept dichromate as an answer in markscheme though...

@hocustar4641 4 ай бұрын

thank you

@hdotfx 4 ай бұрын

thank u

@maryamaurangzaib7176 11 ай бұрын

Thank you so much, but can you please tell which chapter is question 2 (c) from

@igcsewithhan 8 ай бұрын

carbonates chapter

@maryamaurangzaib7176 8 ай бұрын

@@igcsewithhan thanks for replying but I am done with my CIE's so.....

@igcsewithhan 8 ай бұрын

@@maryamaurangzaib7176 hahaha how was it ?

@user-pi1vv1to7x 4 ай бұрын

why SxFy, cant we put fluorine first? and how can we know which is positioned first?

@khubaibhaseeb1095 4 ай бұрын

LOL I HAD THE EXACT SAME DOUBT JUST NOW BRO 😂😂

@khubaibhaseeb1095 4 ай бұрын

Did you figure it out yet?

@igcsewithhan 4 ай бұрын

hello ! Generally when naming u want to put the metal before the non metal, that's usually standard.

@khubaibhaseeb1095 4 ай бұрын

@@igcsewithhan ?! It's a covalent compound! It's non-metal non-metal!!

@igcsewithhan 4 ай бұрын

@@khubaibhaseeb1095 oh my days, that completely flew over my head ! sorry about that, but in a non-metal non-metal scenario they don't cover why S is before F when writing the compound out in the IG syllabus. If you are curious it has to do with the electropositivity of the elements, but in this scenario my advice would probably just remember most of the time the halogens will be at the back. Sorry again for misunderstanding the question 😅