OCR GCSE Combined Science A (Gateway) Chemistry Paper 10 Higher November 2021 mark scheme J250/10
Practise the past exam questions by topic
Relative formula mass17 Qs
Greenhouse gases & climate change21 Qs
Electrolysis of aqueous solutions5 Qs
Three states of matter46 Qs
Atmospheric pollutants12 Qs
Composition & evolution of the atmosphere17 Qs
Crude oil, hydrocarbons & alkanes15 Qs
Conservation of mass & balanced equations52 Qs
Cracking & alkenes10 Qs
Reactivity of metals15 Qs
Collision theory & activation energy8 Qs
Limiting reactants6 Qs
Rate of reaction22 Qs
Catalysts16 Qs
Periodic table45 Qs
Fractional distillation & petrochemicals14 Qs
Alternative methods of extracting metals5 Qs
Electrolysis10 Qs
Dynamic equilibrium8 Qs
Effect of changing conditions on equilibrium7 Qs
+16 more
17 questions
- Q1 - 1 mark - Relative formula mass
- Q2 - 1 mark - Greenhouse gases and climate change
- Q3 - 1 mark - Electrolysis of aqueous solutions
- Q4 - 1 mark - The three states of matter
- Q5 - 1 mark - Atmospheric pollutants
- Q6 - 1 mark - The composition and evolution of the atmosphere
- Q7 - 1 mark - Crude oil, hydrocarbons and alkanes
- Q8 - 1 mark - Conservation of mass and balanced equations, Cracking and alkenes
- Q9 - 1 mark - Reactivity of metals
- Q10 - 1 mark - Conservation of mass and balanced equations
- Q11 - 8 marks - Collision theory and activation energy, Limiting reactants, Rate of reaction
- Q12 - 4 marks - Catalysts
- Q13 - 6 marks - Reactivity of metals, The periodic table
- Q14 - 12 marks - Conservation of mass and balanced equations, Cracking and alkenes, Fractional distillation and petrochemicals, The three states of matter
- Q15 - 6 marks - Alternative methods of extracting metals
- Q16 - 9 marks - Conservation of mass and balanced equations, Electrolysis, The three states of matter
- Q17 - 5 marks - Dynamic equilibrium, The effect of changing conditions on equilibrium
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