OCR 21st Century Science C4 C5 C6 14th June 2016 Discussion thread

Original post by ahmedismail_1

i talked about electrons instead of ions in the 6 mark question?

Technically, you really had to talk about ions, there werent any free elecgrons, as it werent a metal.

Reply 123

What did you put For Matt thinkin about what compounds were alkali?

Reply 124

Original post by Mr_Elmo

I really liked that paper funnily enough, a couple things were confusing but not too bad. Did you have to discuss bonds forming vs breaking on the last 6 marker, as im sure that is part of C7. I simply discussed what the graphs showed and what it meant in terms of energy

Yeah I dont think you had to talk about that, it is in C7.

Reply 125

And what were similar properties of alkali metals? I put they react with cold water to produce a metal hydroxide and hydrogen gas as well as the fact that they have 1 electron in their outer shell. I also said how they are alkali metals that react with the halogens 😂

Reply 126

Original post by ahmedismail_1

i talked about electrons instead of ions in the 6 mark question?

Technically, you really had to talk about ions, there werent any free elecgrons, as it werent a metal.

Reply 127

Original post by NiamhM1801

Was the one that should have given -30°C 50g? I did it in 2 seconds because I was really pushed for time and didn't have time to check :frown:

Also what did you all get for the half equation? I think I got it wrong as my friends got something different. I put Pb⁴+ + 4e- -> Pb

Yes that is right.
And your friend is incorrect, it was Pb2+ + 2e- --> Pb sorry about the symbols :biggrin:

Reply 128

username1454260

17

Original post by NiamhM1801

I know, it was the middle of the paper that really just made me want to give up! All I remember is bloody diamond and graphite and it didn't even come up :frown:

same, I'd contribute but I got lots wrong haha. I'm glad the environment didn't come up - that's where I always go wrong. I'm doing P456 today ahead of Thursday. That should be nice, I love physics :biggrin:

Same tbh, at first I thought the paper was ok but now I've realised just how badly I've done! :frown:

exactly - i was so upset that diamond didn't come up. I got tonnes wrong! I'm just hoping I got 35/60 cos that's an A... usually. I'm going to do physics tonight but I hate that too, wow, you're one of the few I know how actually likes physics :biggrin:

but didn't you say you did well on core chemistry? It should balance out. I need to move on now aha

Reply 129

username1454260

17

Original post by TheAnonymousMan

And what were similar properties of alkali metals? I put they react with cold water to produce a metal hydroxide and hydrogen gas as well as the fact that they have 1 electron in their outer shell. I also said how they are alkali metals that react with the halogens 😂

Well done! That's great. I said they all have 1 electron in their outer shell so i at least got 1/60 lol jk, I can't remember what else I said though

(edited 7 years ago)

Reply 130

username1454260

17

Anyone remember those electrolysis zinc questions?? i think i messed up on those :s-smilie:

Reply 131

Neginmortazzavi

Did anyone say that lead had a lower melting point

Reply 132

ahmedismail_1

Original post by kennethdcharles

Technically, you really had to talk about ions, there werent any free elecgrons, as it werent a metal.

does that mean ill get 0 marks

Reply 133

reu_taylor

8

Is there a physics thread or can someone create one please?

Reply 134

Yes I did. And it actually does.

Reply 135