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AQA GCSE Chemistry Unit 2 24 May 2012

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so far your looking like a high b/low a. it really depends on i the physics paper is hard/easy. generally speaking, marks for an a in the physics would be 26-30?

what you should consider is doing allot of revision for physics so u can get an overall of a high a or possibly a*

Reply 201

daniya12

[QUOTE="jesse111;37738317"]

Original post by daniya12

The question was how do you turn a solution of something into a solid.

Evaporation/crystalisation is to get crystal like salt, they wanted condensed/cooled

no condensation turns a gas into liquid. evaporating a solution gets rid of the water- turns it into a gas, so it isnt a solution anymore it is a solid! the salt is a solid when the water gets evaporated

Reply 202

k.lunstone

Original post by Joeldamole

Yeah like 5 people that I asked in my year got that haha, they usually get 100UMS so i guess thats right :s-smilie:

i got 2.89 :/

Reply 203

daniya12

Original post by kman123456

Wow, i did 2/28= Ans x 34 = 2.42857.... And i wrote 2.42 as my answer not 2.43... Would i get the full 3 marks?

you might? i think there would a small range of answers in the mark scheme, although, the calculator displayed 2.428 so you would round up not down...

Reply 204

nancyfitzsimons

what do people think it will be for an A*?

Reply 205

daniya12

Original post by saq96

The question about why manufacturers do not increase pressure....

i wrote that it is a compromise between yield and the rate of reaction...if this right?

not because increasing pressure increase both the yield and rate!

compromise is between temperature..
yo had say that its dangerous and quite expensive to maintain

Reply 206

Zeionic

Original post by nancyfitzsimons

what do people think it will be for an A*?

Hopefully 6 marks...

Reply 207

khalidpatel

LETS HAVE A MARKSCHEME!!!! :angry:

Reply 208

laura_1010

it was crystillation i think..

Reply 209

maxtate

[QUOTE="daniya12;37738415"]

Original post by jesse111

Answers were FILTRATION and EVAPORATION (for those 2 questions that asked which method to use)

Reply 210

daniya12

Original post by jesse111

The question was how do you turn a solution of something into a solid.

Evaporation/crystalisation is to get crystal like salt, they wanted condensed/cooled

no, condensation is turning a gas into liquid nothing to do with making solids. evaporating a solution gets rid of the water by turning it into a gas, so it isnt a solution anymore,, what is left is a solid! the salt is a solid

Reply 211

BBBT

[QUOTE="jesse111;37738317"]

Original post by daniya12

The question was how do you turn a solution of something into a solid.

Evaporation/crystalisation is to get crystal like salt, they wanted condensed/cooled

But the it was a solution and had the symbol (aq) which shows it's dissolved in water so surely you evaporate??

Reply 212

Joeldamole

Original post by Matt0496

No? I'm additional science and I did it

Not THESE exams today, the exams that people are referring to

Reply 213

maxtate

Original post by alicea12

For the ammonia question I put 2.44 g how many marks would I get?

Depends on your working, it was 3 marks so probably 2 maybe 3 :smile:

Reply 214

Zeionic

pm me your answers + questions ( or number ) and i make a unofficial mark scheme, with your name(s) dedicated

Reply 215

nancyfitzsimons

Original post by Sheel1

Hopefully 6 marks...

but really?

Reply 216

daniya12

[QUOTE="maxtate;37738649"]

Original post by daniya12

Answers were FILTRATION and EVAPORATION (for those 2 questions that asked which method to use)

yes that is what i got!!!

Reply 217

blackjenny85

is this the new or old spec that you guys are talking about?

Reply 218

BBBT

Someone make a list of questions with the question number so we know what question is what and then send we can each send our answers to the person in red font ^^^^