A level CHEMISTRY 7405/1 Paper 1 2021 MS
Bristol, City of Bristol College
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A-level CHEMISTRY 7405/1 Paper 1 Inorganic and Physical Chemistry Mark scheme June 2021.
- Exam (elaborations) • 26 pages • 2022
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A-level 
CHEMISTRY 
7405/1 
Paper 1 Inorganic and Physical Chemistry 
Mark scheme 
June 2021. MARK SCHEME – A-LEVEL CHEMISTRY – 7405/1 – JUNE 2021 
11 
Question Answers Additional comments/Guidelines Mark 
01.1 Heat (energy) change at constant pressure 
Ignore conditions even if wrong 
Ignore energy change 
1 
Question Answers Additional comments/Guidelines Mark 
01.2 
M2 Ca2+(g) + 2 e– + Cl 2(g) 
 M3 Ca2+(g) + 2 Cl 
– 
(g) 
M1 Ca(s) + Cl 2(g) 
Alternative M2 Ca+ 
(g) + e‒ + 2 Cl(g) ...
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