The College of Central London

AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry Mark scheme June 2021. MARK SCHEME – AS CHEMISTRY – 7404/2 – JUNE 2021 11 Question Marking guidance Additional Comments/Guidelines Mark 01.1 Number of molecules (with a particular energy) Ignore particles / atoms Allow amount or fraction or proportion for number 1 Question Marking guidance Additional Comments/Guidelines Mark 01.2 There are no molecules with no energy All molecules / particles have some energy Allow p...

AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry Mark scheme June 2021. MARK SCHEME – AS CHEMISTRY – 7404/2 – JUNE 2021 4 For example, in a question requiring 2 answers for 2 marks: Correct answers Incorrect answers (ie incorrect rather than neutral) Mark (2) Comment 1 0 1 1 1 1 They have not exceeded the maximum number of responses so there is no penalty. 1 2 0 They have exceeded the maximum number of responses so the extra incorrect response cancels the c...