OCR GCSE Combined Science A (Gateway) Chemistry Paper 9 Higher June 2019 mark scheme J250/09
Practise the past exam questions by topic
Subatomic particles26 Qs
Formulations6 Qs
Periodic table45 Qs
Mixtures & separation techniques12 Qs
Three states of matter46 Qs
Conservation of mass & balanced equations52 Qs
Bond energy calculations5 Qs
Chemical bonds26 Qs
Moles & amount of substance13 Qs
Relative formula mass17 Qs
Exothermic & endothermic reactions9 Qs
Oxidation & reduction in terms of electrons21 Qs
Reaction profiles10 Qs
Chromatography11 Qs
Amounts of substance in equations6 Qs
Bonding, structure & the properties of matter12 Qs
Empirical formulae10 Qs
Electrolysis of aqueous solutions5 Qs
Limiting reactants6 Qs
Reactions of acids22 Qs
PH scale & neutralisation16 Qs
+17 more
16 questions
- Q1 - 1 mark - Subatomic particles
- Q2 - 1 mark - Formulations
- Q3 - 1 mark - The periodic table
- Q4 - 1 mark - Mixtures and separation techniques
- Q5 - 1 mark - Subatomic particles
- Q6 - 1 mark - The three states of matter
- Q7 - 1 mark - Conservation of mass and balanced equations
- Q8 - 1 mark - Bond energy calculations
- Q9 - 1 mark - Chemical bonds
- Q10 - 1 mark - Moles and amount of substance, Relative formula mass
- Q11 - 12 marks - Chemical bonds, Exothermic and endothermic reactions, Oxidation and reduction in terms of electrons, Reaction profiles
- Q12 - 6 marks - Chromatography
- Q13 - 14 marks - Amounts of substance in equations, Bonding, structure and the properties of matter, Empirical formulae, Moles and amount of substance, Subatomic particles
- Q14 - 6 marks - Conservation of mass and balanced equations, Electrolysis of aqueous solutions
- Q15 - 7 marks - Limiting reactants, Moles and amount of substance
- Q16 - 5 marks - Reactions of acids, The pH scale and neutralisation
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