100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
AQA A-level CHEMISTRY 7405/1 Paper 1 Inorganic and Physical Chemistry Mark scheme June 2022, Exams for Chemistry $6.49   Add to cart

Exam (elaborations)

AQA A-level CHEMISTRY 7405/1 Paper 1 Inorganic and Physical Chemistry Mark scheme June 2022, Exams for Chemistry

 5 views  0 purchase
  • Course
  • Institution

1 Δf H = Δ a H (Sr) + 2ΔaH (Cl) + Δ 1st IE H (Sr) + Δ 2nd IE H (Sr) + 2ΔEA H(Cl) + ΔLEH (Sr) 1 Or – 828 = 164 + (2 x 121) + 548 + 1060 + (2 xΔEA H) + (– 2112) 01.1 M2 2 x ΔEA H = – 730 1 M3 ΔEA H = – 365 (kJ mol–1 ) Allow M3 = M2÷2 (+) 365, –304.5, and –730 = 2 mark...

[Show more]

Preview 4 out of 36  pages

  • June 7, 2023
  • 36
  • 2022/2023
  • Exam (elaborations)
  • Questions & answers
avatar-seller
AQA A-level CHEMISTRY 7405/1 Paper 1 Inorganic
and Physical Chemistry Mark scheme June
2022, Exams for Chemistry

,AQA A-level CHEMISTRY 7405/1 Paper 1 Inorganic and Physical
Chemistry Mark scheme June 2022, Exams for Chemistry

AQA A-level CHEMISTRY 7405/1 Paper 1 Inorganic and Physical Chemistry Mark scheme June
2021 Version: 1.0 Final



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 Examiner.

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

,AQA A-level CHEMISTRY 7405/1 Paper 1 Inorganic and Physical
Chemistry Mark scheme June 2022, Exams for Chemistry
2

, AQA A-level CHEMISTRY 7405/1 Paper 1 Inorganic and Physical
Chemistry Mark scheme June 2022, Exams for Chemistry

AQA A-level CHEMISTRY 7405/1 Paper 1 Inorganic and Physical
Chemistry Mark scheme June 2021 Version: 1.0 Final


AS and A-Level Chemistry
Mark Scheme Instructions for Examiners
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 aligned to the appropriate answer in the
left-hand part of the mark scheme and should only be applied to that item in the mark scheme.
You should mark according to the contents of the mark scheme. If you are in any doubt about
applying the mark scheme to a particular response, consult your Team Leader.
At the beginning of a part of a question a reminder may be given, for example: where
consequential marking needs to be considered in a calculation; or the answer may be on the
diagram or at a different place on the script.
In general the right-hand side of the mark scheme is there to provide those extra details which
might confuse the main part of the mark scheme yet may be helpful in ensuring that marking is
straightforward and consistent.
The use of M1, M2, M3 etc in the right-hand column refers to the marking points in the order in
which they appear in the mark scheme. So, M1 refers to the first marking point, M2 the second
marking point etc.


2. Emboldening
In a list of acceptable answers where more than one mark is available „any two from‟ is
used, with the number of marks emboldened. Each of the following bullet points is a
potential mark.

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller LOVELY01. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $6.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

64438 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$6.49
  • (0)
  Add to cart