M9. (a) any one from there is a colour change • accept goes green or ‘it orange’ is insufficient ‘the colour’ a new metal is formed • accept iron filings change ‘the colour’ 1 (L5) (b) (i) copper accept ‘Cu’ 1 (L5) (ii) iron sulphate accept ‘FeSO4’ 1 (L6) (iii) no • any one from iron is more reactive than copper • accept is higher on the reactivity ‘iron series’ copper is less reactive than iron • accept does not displace ‘copper iron’ both an indication that the reaction does not happen and the explanation are required for the mark 1 (L6) (c) calcium • potassium if more than two boxes are ticked, award no mark both answers are required for the mark 1 (L6) [5] M10. (a) (i) zinc sulphate + copper not or do accept ‘sulphide’ ‘sulphur’ 1 (ii) brown accept or ‘brownish’ ‘browny grey’ 1 (b) (i) magnesium + copper sulphate → magnesium sulphate + copper all must be correct 1 (ii) silver grey answers may be in either order accept or ‘grey’ ‘silver’ do not accept or ‘white’ ‘light grey’ 1 (iii) brown accept ‘copper’ 1 (c) (i) no reaction or nothing or none 1 (ii) answers should refer to both magnesium and iron any one from magnesium is more reactive that iron • accept is above ‘magnesium iron’ iron is less reactive than magnesium • accept is below ‘iron magnesium’ 1 [7]
M9. (a) any one from • there is a colour change accept ‘it goes green or orange’ ‘the colour’ is insufficient • a new metal is formed accept ‘the iron filings change colour’ 1 (L5) (b) (i) copper accept ‘Cu’ 1 (L5) (ii) iron sulphate accept ‘FeSO4’ 1 (L6) (iii) • no any one from • iron is more reactive than copper accept ‘iron is higher on the reactivity series’ • copper is less reactive than iron accept ‘copper does not displace iron’ both an indication that the reaction does not happen and the explanation are required for the mark 1 (L6) (c) • calcium potassium if more than two boxes are ticked, award no mark both answers are required for the mark 1 (L6) [5] M10. (a) (i) zinc sulphate + copper do not accept ‘sulphide’ or ‘sulphur’ 1 (ii) brown accept ‘brownish’ or ‘browny grey’ 1 (b) (i) magnesium + copper sulphate → magnesium sulphate + copper all must be correct 1 (ii) silver grey answers may be in either order accept ‘grey’ or ‘silver’ do not accept ‘white’ or ‘light grey’ 1 (iii) brown accept ‘copper’ 1 (c) (i) no reaction or nothing or none 1 (ii) answers should refer to both magnesium and iron any one from • magnesium is more reactive that iron accept ‘magnesium is above iron’ • iron is less reactive than magnesium accept ‘iron is below magnesium’ 1 [7]