Edexcel GCSE Chemistry Paper 1 Higher Tier 1CH0 1H - 27 May 2022 [Exam Chat]

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Reply 20

xoxo9091

what did u guys put for the question “how is copper obtained from copper oxide” lab method

(edited 1 year ago)

Reply 21

xoxo9091

also the question “why doesn’t solid magnesium carbonate conduct electricity but solid magnesium does” what was ur answer

Reply 22

Studentio10

Original post by xoxo9091

also the question “why doesn’t solid magnesium carbonate conduct electricity but solid magnesium does” what was ur answer

Solid magnesium carbonate is arranged in lattice structure with magnesium ions and carbonate ions.. The ions are fixed and cannot move to carry charge.Solid magnesium has a layer of positive ions surrounded by a sea of delocalised electrons. The delocalised electrons can carry current

Reply 23

Humxid

You could say that magnesium carbonate is insoluble

Reply 24

xoxo9091

Original post by Humxid

You could say that magnesium carbonate is insoluble

i thought of that too but then it asked why does “solid” magnesium carbonate not conduct electricity

Reply 25

madzzzzina

Original post by xoxo9091

what did u guys put for the question “how is copper obtained from copper oxide” lab method

Hi,
I believe the answer is to mix copper oxide with carbon and then heat it. Because copper is lower than carbon in the reactivity series, it can be extracted via a displacement reaction.

Reply 26

Humxid

That is a correct point right?

Reply 27

MayaVellichor

What did you get for the one with the two equations for iron and lead?

Reply 28

MayaVellichor

Also what did you do for the one with the box asking you to draw an alloy metal... I didn't know how detailed I needed to go :/

Reply 29

eviemills4

Original post by MayaVellichor

What did you get for the one with the two equations for iron and lead?

i got the second one with the 3 and the 2 as when you worked out the noles it was a ratio of 0.08 to 0.12 and then you divide by the smallest to get 1:1.5 which is then equivalent to 2:3

Reply 30

MayaVellichor

Original post by eviemills4

i got the second one with the 3 and the 2 as when you worked out the noles it was a ratio of 0.08 to 0.12 and then you divide by the smallest to get 1:1.5 which is then equivalent to 2:3

I got the second one too but I did it by disproving that it could be the first one cause it wasn't a 1:1 ratio... So I will probably get at least 1 mark from that (fingers crossed)

Reply 31

Studentio10

What did you guys get for what is meant by dynamic?

Reply 32

MayaVellichor

Original post by Studentio10

What did you guys get for what is meant by dynamic?

I said that it meant the reaction was continuously reacting, but I wasn't really sure... Hbu?

Reply 33

eviemills4

Original post by Studentio10

What did you guys get for what is meant by dynamic?

I think I said that the reaction is consistently happening in both directions, or something like that

Reply 34

madzzzzina

Original post by MayaVellichor

Also what did you do for the one with the box asking you to draw an alloy metal... I didn't know how detailed I needed to go :/

I didn't exactly draw 70% of the atoms as copper or whatever it was. I just made sure there were a lot of copper atoms compared to the number of zinc atoms. I think some people actually drew a certain amount of atoms and made 70% of them copper and the rest zinc, so like in 20 atoms, 14 would be copper and 6 would be zinc. Also, I think you get a mark for drawing the zinc atom bigger as stated in the question.