OCR GCSE Combined Science A (Gateway) Chemistry Paper 4 Foundation June 2023 mark scheme J250/04
Practise the past exam questions by topic
Periodic table45 Qs
Greenhouse gases & climate change21 Qs
Reactivity of metals15 Qs
Composition & evolution of the atmosphere17 Qs
Three states of matter46 Qs
Catalysts16 Qs
Factors affecting the rate of reaction11 Qs
Reversible reactions6 Qs
Using electrolysis to extract metals9 Qs
Crude oil, hydrocarbons & alkanes15 Qs
Fractional distillation & petrochemicals14 Qs
Atmospheric pollutants12 Qs
Conservation of mass & balanced equations52 Qs
Extraction of metals & reduction9 Qs
Oxidation & reduction in terms of electrons21 Qs
Reducing the use of resources6 Qs
Collision theory & activation energy8 Qs
Rate of reaction22 Qs
Reactions of acids22 Qs
+15 more
16 questions
- Q1 - 1 mark - The periodic table
- Q2 - 1 mark - Greenhouse gases and climate change
- Q3 - 1 mark - Reactivity of metals
- Q4 - 1 mark
- Q5 - 1 mark - The composition and evolution of the atmosphere
- Q6 - 1 mark - The three states of matter
- Q7 - 1 mark - Catalysts
- Q8 - 1 mark - The periodic table
- Q9 - 1 mark - Catalysts
- Q10 - 1 mark - Factors affecting the rate of reaction
- Q11 - 5 marks - Reversible reactions, The periodic table, Using electrolysis to extract metals
- Q12 - 10 marks - Crude oil, hydrocarbons and alkanes, Fractional distillation and petrochemicals
- Q13 - 6 marks - The periodic table
- Q14 - 6 marks - Atmospheric pollutants, Greenhouse gases and climate change
- Q15 - 11 marks - Conservation of mass and balanced equations, Extraction of metals and reduction, Oxidation and reduction in terms of electrons, Reducing the use of resources
- Q16 - 12 marks - Collision theory and activation energy, Rate of reaction, Reactions of acids, The three states of matter
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