19th May 2016 - OCR 21st Century Science C1 C2 C3 Exam

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I agree about fractional distillation! Definitely revise that.

Anyone think electrolysis might make an appearance? Also haven't seen a question on alkalis for a while...

(edited 7 years ago)

Reply 21

username2471155

Original post by Ella_08

Guys, I thought it would be best to make a thread, so we can do the same thing as B123 (by MezmorisedPotato). I predict crude oil, maybe a bit on acid rain and salt and health. I really hope alkalis don't come up for the 6 marker. Share your predictions! :smile:

What's the quickest way to revise the whole of Chemistry? I'm really tired and it's at 9AM in the morning

Reply 22

username2471155

Original post by emmald583

I agree about fractional distillation! Definitely revise that.

Anyone think electrolysis might make an appearance? Also haven't seen a question on alkalis for a while...

Yeah I think electrolysis will come

Reply 23

username1454260

Original post by zXcodeXz

What's the quickest way to revise the whole of Chemistry? I'm really tired and it's at 9AM in the morning

Just go over the biggest things in most detail, like fractional distillation, electrolysis, properties of polymers, formation of salt, limestone, coal and alkalis. And then go over the other stuff after that. I would say go to bed at 10pm and get up at 5:30am/6:00am because then in the morning you won't be as tired, ur brain will be fresh and you'll still have lots of time in the morning

Reply 24

Mani_McCorry

Has anyone got any predictions? so nervous for the exam teh biology one was so weird :smile:

Reply 25

LokiiR

Hai guys
So can someone just c123 tell me all the predictions for 6markers for each unit pleaaase
Thankss a lot and goodluck to you guys

Reply 26

Mani_McCorry

Original post by vadermolt1

Notes!

omg this is so helpful thanks

Reply 27

username1454260

Guys make sure you know the products of electrolysis, it's a common question. Also acid rain and life cycle assessment is common

Reply 28

Mani_McCorry

Original post by Ella_08

Guys make sure you know the products of electrolysis, it's a common question. Also acid rain and life cycle assessment is common

thank you so much!!! :smile:

Reply 29

maymagic

Original post by Ella_08

Guys make sure you know the products of electrolysis, it's a common question. Also acid rain and life cycle assessment is common

What are the products of electrolysis??

Reply 30

username1454260

Original post by maymagic

What are the products of electrolysis??

hydrogen gas, chlorine gas and sodium hydroxide. Be careful though, sometimes the hydroxide can change depending on what is put in like it could be potassium hydroxide... you'll work it out. It's ALWAYS hydrogen and chlorine though

Reply 31

username1454260

Original post by Mani_McCorry

thank you so much!!! :smile:

No prob

Reply 32

Aliyah92

I definitely think electrolysis, fractional distillation, acid raid and limestone may come up

Reply 33

yeahimsammalli

Can someone please make a list of things that they think would be most needed to revise, thankyouuu

Reply 34

louisemayorx

Original post by Ella_08

Of course! c;

thank you so much! very helpful, but i now realise i know none of chemistry...

Reply 35

Usmaan345

Can we do a revision chat on here about c1 c2 c3
Anyone up for it ?

Posted from TSR Mobile

Reply 36

yeahimsammalli

Also guys make your predictions for
C1 6 marker
C2 6 marker
& C3 6 marker,
mine is alkalis, salt mining and properties

Reply 37

username1454260

Original post by Usmaan345

Can we do a revision chat on here about c1 c2 c3
Anyone up for it ?

Posted from TSR Mobile

Yeah sure, I am. Let's ask each other loads of questions and then someone should answer it. First question: Why might synthetic materials be better than natural materials?