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June 2019 MS - Paper 1 AQA Chemistry AS-level.
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Fluoride ion has (two) fewer protons/lower nuclear charge Weaker attraction between nucleus and (outer) electrons Do not allow fluorine, but allow fluorine ion Any reference to different numbers of electrons in the ions loses M1 Allow answers in terms of sodium ion but must be explicit. Igno...

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  • May 23, 2023
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  • 2022/2023
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June 2019 MS - Paper 1
AQA Chemistry AS-level.

, PMT




AS
CHEMISTRY
7404/1
Paper 1 Inorganic and Physical Chemistry
Mark scheme
June 2019
Version: 1.0 Final

, PMT


MARK SCHEME – AS CHEMISTRY – 7404/1 – JUNE 2019




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 the
standardisation events which all associates participate in and is the scheme which was used by them in
this examination. The standardisation process ensures that the mark scheme covers the students’
responses to questions and that every associate understands and applies it in the same correct way.
As preparation for standardisation each associate analyses a number of students’ scripts. Alternative
answers not already covered by the mark scheme are discussed and legislated for. If, after the
standardisation process, associates encounter unusual answers which have not been raised they are
required to refer these to the Lead Assessment Writer.

It must be stressed that a mark scheme is a working document, in many cases further developed and
expanded on the basis of students’ reactions to a particular paper. Assumptions about future mark
schemes on the basis of one year’s document should be avoided; whilst the guiding principles of
assessment remain constant, details will change, depending on the content of a particular examination
paper.


Further copies of this mark scheme are available from aqa.org.uk

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