GCSE OCR 21st Century Triple Science (CBP1-7) Thread

Is equilibrium the same as dynamic equilibrium I don't understand does the harber process reach eaquilibrium but not dynamic equilibrium ??

Reply 2262

azo

8

Original post by olmyster911

After watching that I'm more worried :s-smilie:

They said that they knew if someone had finished their answer if it went off the screen, but mine don't, and I usually finish a sentence before starting a new one on the additional paper, which makes me think they don't know I've written more and won't mark the additional paper :eek:

But those papers are hand marked so the marker will have the additional paper so will have to mark it? Anyway I'm sure it will be fine

Reply 2263

username1344042

6

Original post by azo

But those papers are hand marked so the marker will have the additional paper so will have to mark it? Anyway I'm sure it will be fine

So the exam paper AND the additional booklet are marked together?

Reply 2264

OP

Original post by olmyster911

After watching that I'm more worried :s-smilie:

They said that they knew if someone had finished their answer if it went off the screen, but mine don't, and I usually finish a sentence before starting a new one on the additional paper, which makes me think they don't know I've written more and won't mark the additional paper :eek:

STOP WORRYING. THEY READ THE WHOLE ANSWER AND THEN MARK IT :tongue:

There was an examiner report about it when doing OCR technology that applied to the whole exam system.

Reply 2265

Original post by Sulfur

I think that I'll take the risk and not revise the sections on Ethanol/Ethane/Ethene because there's so much nonsense.

Are you doing further maths

Reply 2266

azo

8

Original post by olmyster911

So the exam paper AND the additional booklet are marked together?

That's my understanding, yes! :smile:

Reply 2267

OP

Original post by Swag>education

Are you doing further maths

Yup, are you?

Reply 2268

username1344042

6

Original post by Sulfur

STOP WORRYING. THEY READ THE WHOLE ANSWER AND THEN MARK IT :tongue:

There was an examiner report about it when doing OCR technology that applied to the whole exam system.

Original post by azo

That's my understanding, yes! :smile:

Okay, sorry for being a nuisance xD I was just scared my work wouldn't count is all :awesome:

Reply 2269

Do we need to know about the bromine water test between alkanes and alkenes

Reply 2270

Original post by Sulfur

Yup, are you?

Yh how did you find Mondays paper

Reply 2271

OP

Original post by olmyster911

Okay, sorry for being a nuisance xD I was just scared my work wouldn't count is all :awesome:

Don't worry - I'd be the same in your position :smile:

Original post by Swag>education

Yh how did you find Mondays paper

Normally on past papers I don't really drop that many marks, but on this I dropped 15 despite thinking that it was alright - I hated the last question and I messed up the cyclic quad that I thought was easy! :rolleyes:

What about you, what are you aiming for?

(edited 9 years ago)

Reply 2272

lyricalvibe

16

Original post by Swag>education

Is equilibrium the same as dynamic equilibrium I don't understand does the harber process reach eaquilibrium but not dynamic equilibrium ??

Equilibrium is more general though, as in it justrefers to balance and in chemical reactions this balance is constantly changing(chemiclas swithing between reactant and product), the habor process is reversible but never reaches equilibrium(reversible reactions are able to meet dynamic equilibrium but don't always) and i thinl you'd get a lower yeild(like half) if it reached dynamic equilibrium

Reply 2273

Original post by Sulfur

Don't worry - I'd be the same in your position :smile:

Normally on past papers I don't really drop that many marks, but on this I dropped 15 despite thinking that it was alright - I hated the last question and I messed up the cyclic quad that I thought was easy! :rolleyes:

What about you, what are you aiming for?

I know I got atleast 50 most 59 but an A* atleast I hope Im much better at calculator I tend to make silly mistakes on non and I couldn't do the last 2 questions I tried

Reply 2274

OP

Original post by Swag>education

I know I got atleast 50 most 59 but an A* atleast I hope Im much better at calculator I tend to make silly mistakes on non and I couldn't do the last 2 questions I tried

The trigonometric one seemed difficult, but when in doubt - factorise! It was alright after that stage, but still tricky overall. I like the non-calc better than calculator, but I'm gonna have to try and get 95/105 on this one which'll be very very difficult.

Reply 2275

OP

Does anyone find some of this C7 really irrelevant? Such as the stages to introduce a new chemical process, how ethanol is produced and these quantitative analysis pages?

Reply 2276

Original post by Sulfur

The trigonometric one seemed difficult, but when in doubt - factorise! It was alright after that stage, but still tricky overall. I like the non-calc better than calculator, but I'm gonna have to try and get 95/105 on this one which'll be very very difficult.

I only need like 60 or 70 for my A* good luck

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Reply 2277