AQA A-level Chemistry 7405 - Paper 1 (Inorganic &amp; Physical Chem) - 04th June 2019

Original post by HappyMedic2001

Any topic predictions ?

https://tailoredtutors.co.uk/wp-cont...tions-2019.pdf

these predictions were provided by tailored tutors

Reply 61

Original post by junior.yk

Tips on revising and memorising/remembering all the Inorganic equations?

like someone else said earlier in the thread, there is no magical way of learning it,

just practice writing them alot and understand the equations that you are writing

Reply 62

Habib-Reh2

I highly reccomend anyone whos cramming topics in rn not to use cgp textbook use https://chemrevise.org/revision-guides/ it really good for every topics and pretty much covers the whole spec!! GOOD LUCK EVERYONE HOPE WE ALL DO WELL!!!

Original post by 8472

AQA A-level Chemistry 7405 - Paper 1 - 04th June

Exam technique, night before breakdowns and discussion regarding this exam... It's all here :gthumb:

Feel free to add resources to the thread as well as anything that may be helpful to others :smartass:

This thread covers the following papers:

•

7405 Inorganic and Physical Chemistry 2h 04 June 2019 pm

The official specification: https://filestore.aqa.org.uk/resources/chemistry/specifications/AQA-7404-7405-SP-2015.PDF

Spoiler

Specimen and past papers:
https://www.aqa.org.uk/subjects/science/as-and-a-level/chemistry-7404-7405/assessment-resources

:goodluck:

Year 13 Thread - Year 12 Thread - A-level Exam Hub

i

Reply 63

Habib-Reh2

Similar principles apply for Kp and Kc as they are both affected by temperature and not by concentration or pressure :smile:

Original post by smaiu

All I know is that the only thing that changes Kc, and Kp is temperature. I got no clue why, done some research on it, and I was even more confused.

Reply 64

smaiu

So here's my thing. Pressure, and concentration will not change the value of Kc, or Kp due to equilibrium shifting to a position that ensures the value of Kc, or Kp stays constant correct? So does temperature inherently change this value of Kc, and Kp, cause I'm confused on why equilibrium will not just shift to the forward or backward reaction, in order to keep Kp, and Kc constant.

Original post by usermeme1112

Similar principles apply for Kp and Kc as they are both affected by temperature and not by concentration or pressure :smile:

Reply 65

Habib-Reh2

Changes in Concentration, Pressure and Temperature will affect the position of equilibrium Ie: what way it shifts, but only change in temperature will affect the Equilibrium constant.
As Kp is a constant for Partial Pressures of Gases in a system
And Kc is a constant for the concentration of Reactants in a system

Original post by smaiu

So here's my thing. Pressure, and concentration will not change the value of Kc, or Kp due to equilibrium shifting to a position that ensures the value of Kc, or Kp stays constant correct? So does temperature inherently change this value of Kc, and Kp, cause I'm confused on why equilibrium will not just shift to the forward or backward reaction, in order to keep Kp, and Kc constant.

Reply 66

thewaterbottle12

I haven’t begun exam questions yet. I’m so screwed.

Reply 67

smaiu

You're a legend

Original post by MH1234567

Well here's loads of them:
https://drive.google.com/drive/folders/1WZvzm_XQzp_qYtRRawc3BGxs5_te_saa

Reply 68

username3295148

Interesting.... My post got removed by tsr. They were reviewing it.

Original post by smaiu

You're a legend

Reply 69

HappyMedic2001

12

You have a week to start. Don’t worry. Start now

Original post by thewaterbottle12

I haven’t begun exam questions yet. I’m so screwed.

Reply 70

Jiiny

12

Here's last years A level paper and last years AS paper if anyone's been looking for it:
http://www.scienceskool.co.uk/a-level-exams1.html

Reply 71

AlmostUniStudent

Not gonna lie im proper stressed about this exam 😓😓

Reply 72

who_am_i08

The best thing which I found for remembering all the mechanisms is to categorise them by their prefix. For example remember all of the ones that start with 'Nucleophilic', 'Elimination', 'Electrophilic' and learn their reagents and what products they form. Hope this helps

Reply 73

who_am_i08

Original post by pigeontree27

has anyone repeated old spec papers ?

yeah, i mainly do Chem 4 and Chem 5

Reply 74

who_am_i08

They also can be found from the Aqa website if anyone is wondering

Original post by Jiiny

Here's last years A level paper and last years AS paper if anyone's been looking for it:
http://www.scienceskool.co.uk/a-level-exams1.html

Reply 75

thewaterbottle12

Can we be asked about organic chemistry in paper 1? I remember seeing a question on isomerism but I thought that would come up in paper 2?

Reply 76

pigeontree27

10

maybe isomerism in terms of transition metals ?

Original post by thewaterbottle12

Can we be asked about organic chemistry in paper 1? I remember seeing a question on isomerism but I thought that would come up in paper 2?

Reply 77

Original post by thewaterbottle12

Can we be asked about organic chemistry in paper 1? I remember seeing a question on isomerism but I thought that would come up in paper 2?

organic stuff wouldnt come up in paper 1, only physical and inorganic

there is also some stuff about isomerism in the transition metals topic of inorganic ... optical isomers of complex ions ...cisplatin

(edited 4 years ago)

Reply 78

maryamrahim

Guys how do you work this out

CaCO3(s) + SiO2(s) → CaSiO3(l) + CO2(g)

The volume of carbon dioxide, measured at 298 K and 1.01 × 105 Pa, formed in this reaction during the removal of 1.00 tonne (1000 kg) of silicon dioxide is

A 24.5 dm3
B 408 dm3
C 24.5 m3
D 408 m3

The answer is B, and i know you have to work out the number of moles then use the ideal gas equation but my numbers seem to be all wrong :s-smilie:

Reply 79