AQA • Chemistry

AQA JUNE 2022 CHEMISTRY A LEVEL 7405 PAPER 2 MARK SCHEME Mark scheme only

AQA JUNE 2022 CHEMISTRY A LEVEL 7405 PAPER 1 MARKSCHEME Mark scheme only

The enthalpy change / ΔH when one mole of a (solid) ionic compound dissociates (fully) into gaseous ions Ignore standard states / conditions Allow heat change at constant pressure when… Ignore heat change (alone) / energy change M2 Allow suitable equation with state symbols for ions Not one mole of gaseous ions

3.14 Organic reaction mechanisms Curly arrows should originate either from a lone pair of electrons or from a bond. The following representations should not gain credit and will be penalised each time within a clip. H3C Br _ : H C . Br H3C . .Br .. _ OH OH For example, the following would score zero marks H H3C C Br HO H When the curly arrow is showing the formation of a bond to an atom, the arrow can go directly to the relevant atom, alongside the rel...

1. General The mark scheme for each question shows: • the marks available for each part of the question • the total marks available for the question • the typical answer or answers which are expected • extra information to help the examiner make his or her judgement and help to delineate what is acceptable or not worthy of credit or, in discursive answers, to give an overview of the area in which a mark or marks may be awarded. The extra information in the ‘Comments’ column is ...

2022 Chemistry AQA AS Paper 2 QUESTION PAPER ONLY, to use for revision only. Any questions or want to negotiate a price message me.

AQA GCSE COMBINED SCIENCE: TRILOGY 8464/C/2H Chemistry Paper 2H Mark scheme June 2020. GCSE COMBINED SCIENCE: TRILOGY 8464/C/2H Chemistry Paper 2H Mark scheme June 2020 Version: 1.0 Final Mark Scheme *206g8464c2h/MS* MARK SCHEME – GCSE COMBINED SCIENCE: TRILOGY – 8464/C/2H – JUNE 20 2 Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions, by a panel of subject teachers. This mark scheme includes any amendments made at ...

AS level paper 1 Chemistry 2021

These are detailed Revision Notes for Topic 1.12 of AQA A-Level Chemistry (Acids, Bases and Buffers). They were written by me using a combination of the textbook and class notes. I will also be uploading the other topics and creating bundles. Topics Included: - Defining an acid - The pH scale - Weak acids and bases - Acid-base titrations - Choice of indicators for titrations - Buffer solutions

These are detailed Revision Notes for Topic 1.10 of AQA A-Level Chemistry (Kp). They were written by me using a combination of the textbook and class notes. I will also be uploading the other topics and creating bundles. Topics Included: - Equilibrium constant Kp for homogenous systems