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OCR 21st Century Chemistry C1 C2 C3 Thurs 19th May GCSE

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Reply 20
Original post by Usmaan345
Can someone please help me on 6 mark questions please pm me or reply to this ASAP THANKS YOU


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Take your time, when u see the 6 marker, plan for 30 seconds and write key words that link to the question, divide the question up into different sections so u know what to write. Try to work out if the question is from the c1, c2, c3 spec and then apply any knowledge u have of the content to that particular question if u have nothing to write
Original post by 123lucasc
does anyone have the past paper for the 2015 ocr 21st century c1 c2 c3?


2015 6mq:
C1: Early atmosphere on Mars and gases

C2: a data related q. About choosing the right rope with specific requirements

C3: continental drift
Original post by Usmaan345
Can someone please help me on 6 mark questions please pm me or reply to this ASAP THANKS YOU


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C1 Catalytic Converters/ reducing pollution

C2 Crude oil/fractional distillation or modifying polymers

C3 Solution Mining VS Rock Salt Mining or Salts

Hope this helps
I'm so scared it is unreal


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Original post by princxssema
I'm so scared it is unreal


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So am I :-( But we can only do our best and as long as as we try to answer every question then that's all we can do, good luck and do your best,you'll do better than you expect x
Original post by saladays
So am I :-( But we can only do our best and as long as as we try to answer every question then that's all we can do, good luck and do your best,you'll do better than you expect x


Yeah, hopefully good luck to you too lets ace this we can do it !


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Does anyone think life cycle assessments will come up ?!


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That was such an easy exam. The only question I got mixed up on was the Solution Mining question.

The 1st 6-marker was easy, you just had to talk about the data and the effects of Carbon Monoxide and Nitrogen Dioxide and what it can do to the large city (as well as the other pollutants).

The 2nd 6-marker (the plans) was a joke. It was more of a Controlled Assessment question than a science question.
Matt was clearly right.

The 3rd 6-marker was easy/average. The data told you everything and you just had to compare them and say which LCA steps were missing (transportation, the disposal method, etc.)
easy exam indeed
What did you guys put for the very first question?


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The six mark questions were so good!
Original post by GeorgiaC901
What did you guys put for the very first question?


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Pure oxygen allows things to burn rapidly at higher temperatures. It also enables complete combustion.
Beautiful beautiful exam! It wasss sooo easyy!!!
Reply 33
Original post by GeorgiaC901
What did you guys put for the very first question?


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First question I wrote oxygen is more reactive than air, therefore it has been used.
Reply 34
What did u guys get for the last 4 marker in the test about the data??

I just went through each row and explained the data for each one
Should we make an unofficial mark scheme?
Original post by Sum Ting
What did u guys get for the last 4 marker in the test about the data??

I just went through each row and explained the data for each one


Yeah that's what I did too. The only thing that decreased, I believe, was the number of toxic liquids.
That was a perfect exam
Reply 38
Original post by stormblazer999
Should we make an unofficial mark scheme?


Yes!
Original post by faz103
Yes!


Alright, but we need to get lots of people to join in so that we can collab all the questions together.

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