AQA AS Chemistry 7404/1 and 7404/2 - 27th May 2016 and 10th June 2016

Original post by OneandOnly123

Do u guys think the real papers will be as hard as the specimen papers because if they are then i have flopped it

I doubt it but just expect them to be as hard so you'll be more prepared.

Reply 141

Original post by OneandOnly123

Do u guys think the real papers will be as hard as the specimen papers because if they are then i have flopped it

I asked my teacher and he said that he really didn't know. The real papers may be as hard as this. Chemistry was my favourite subject and it's just taken a toll on me now :afraid:

Reply 142

If anyone is free to help, could they possibly help me with the last question from the specimen, paper 1.

Which of the following contains the most chloride ions?
A 10cm3 of 3.30X10^-2 moldm^-3 aluminium chloride solution
B 20cm3 of 5.00X10^-2 moldm^-3 calcium chloride solution
C 30cm3 of 3.30X10^-2 moldm^-3 hydrochloric acid
D 40cm3 of 2.50X10^-2 moldm^-3 sodium chloride solution

Reply 143

Amrita_98

A calcium ion is Ca2+ and nitrate ions is NO3- so you need two nitrate ions to balance the calcium ion

Reply 144

rosemondtan

10

I actually thought the specimen papers weren't too bad (out of 2 specimen papers and 2 Teachers' only specimen materials only one of the Teachers' specimen materials was actually hard) the specimen papers were okay

Reply 145

haes

6

Original post by angellll

If anyone is free to help, could they possibly help me with the last question from the specimen, paper 1.

Which of the following contains the most chloride ions?
A 10cm3 of 3.30X10^-2 moldm^-3 aluminium chloride solution
B 20cm3 of 5.00X10^-2 moldm^-3 calcium chloride solution
C 30cm3 of 3.30X10^-2 moldm^-3 hydrochloric acid
D 40cm3 of 2.50X10^-2 moldm^-3 sodium chloride solution

I'm not sure if my method was correct but I remember getting the answer correct:
You would find the moles of each thing. But for Aluminium chloride you'd have to multiply your answer by 3 because it's AlCl_3, and for Calcium chloride you'd have to multiply by 2 as it is CaCl_2.
_{(That was a lot of work for a multiple choice question though :/)}

Reply 146

Original post by haes

I'm not sure if my method was correct but I remember getting the answer correct:
You would find the moles of each thing. But for Aluminium chloride you'd have to multiply your answer by 3 because it's AlCl_3, and for Calcium chloride you'd have to multiply by 2 as it is CaCl_2.
_{(That was a lot of work for a multiple choice question though :/)}

Thank you very much :smile:

How did you find the paper?

Reply 147

haes

6

Original post by angellll

Thank you very much :smile:

How did you find the paper?

Is this the specimen paper that's not available online? Because if it's that one then I found it very difficult!! I especially didn't like the long answer questions. The second specimen was slightly better than the first but overall it was not a nice and I will pray hard that our actual paper isn't like that haha

Reply 148

Is anyone free to give a quick reminder of which types of reactions we need to know?
For example, metal + base/ acid reactions
We learnt them during GCSEs but I've completely forgotten them now

Reply 149

Original post by haes

Is this the specimen paper that's not available online? Because if it's that one then I found it very difficult!! I especially didn't like the long answer questions. The second specimen was slightly better than the first but overall it was not a nice and I will pray hard that our actual paper isn't like that haha

Okay phew

Thought I was the only one

Reply 150

Will the specimens be as hard as the real

Reply 151

Superwoman212

5

I don't know where to find this specimen paper. Please can someone link me? :smile:

This would be helpful

Reply 152

Original post by Superwoman212

I don't know where to find this specimen paper. Please can someone link me? :smile:

This would be helpful

type scienceskool into google

Reply 153

Superwoman212

5

Original post by medicine71012

type scienceskool into google

Thank you

Reply 154

Jamescullen2505

3

What do we actually need to know for 'relevant practical skills'

I know we need to know how to carry out the practicals but that's about it

Reply 155

nicoledsk

8

this is the specimen paper guys!
https://3242b518cbf9d0b160a8d06fcf01f09214d75e13.googledrive.com/host/0B1ZiqBksUHNYT243VFNpYWdMVnc/Specimen%20QP%20-%20Paper%201%20AQA%20Chemistry%20AS-Level.pdf

Reply 156

emilysmith268

11

If there's a question asking us to write an equation for the standard enthalpy of formation of a phosphorous containing compound, would you write phosphorous as P or P₄? Similarly with sulfur - would you write S or S₈?

Reply 157

Original post by emilysmith268

If there's a question asking us to write an equation for the standard enthalpy of formation of a phosphorous containing compound, would you write phosphorous as P or P₄? Similarly with sulfur - would you write S or S₈?

The mark scheme accepts both whenever I see those elements

Reply 158