OCR GCSE Combined Science A (Gateway) Chemistry Paper 3 Foundation June 2023 mark scheme J250/03
Practise the past exam questions by topic
Subatomic particles26 Qs
Metals & non-metals9 Qs
Reactions of acids22 Qs
Three states of matter46 Qs
Chromatography11 Qs
Conservation of mass & balanced equations52 Qs
Ionic bonding & ionic compounds10 Qs
Pure substances9 Qs
Relative formula mass17 Qs
Chemical bonds26 Qs
Tests for gases10 Qs
Electrolysis10 Qs
Mixtures & separation techniques12 Qs
Exothermic & endothermic reactions9 Qs
Reaction profiles10 Qs
PH scale & neutralisation16 Qs
Bonding, structure & the properties of matter12 Qs
Electronic structure18 Qs
+14 more
15 questions
- Q1 - 1 mark - Subatomic particles
- Q2 - 1 mark - Metals and non-metals
- Q3 - 1 mark - Reactions of acids
- Q4 - 1 mark - The three states of matter
- Q5 - 1 mark
- Q6 - 1 mark - Chromatography
- Q7 - 1 mark - Conservation of mass and balanced equations
- Q8 - 1 mark - Ionic bonding and ionic compounds
- Q9 - 1 mark - Pure substances
- Q10 - 1 mark - Relative formula mass
- Q11 - 8 marks - Chemical bonds, Tests for gases, The three states of matter
- Q12 - 10 marks - Electrolysis, The three states of matter
- Q13 - 6 marks - Mixtures and separation techniques
- Q14 - 14 marks - Exothermic and endothermic reactions, Reaction profiles, Reactions of acids, Relative formula mass, The pH scale and neutralisation
- Q15 - 12 marks - Bonding, structure and the properties of matter, Chemical bonds, Electronic structure, Ionic bonding and ionic compounds, Subatomic particles
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