OCR Gateway GCSE Combined Science past papers
OCR Gateway GCSE Combined Science November 2020 Paper 9
- J250/09
- Higher
- Chemistry 1
- 1 hour 10 minutes
- 60 marks
Question paper, Mark scheme: on the OCR website.
Practise this paper's topics
5 new exam questions, 28 minutes, marked as you go. Free, no account.
- Acids, salts and pH
- Electrolysis
- Higher: redox, strong and weak acids, electrode half equations
- Conservation of mass and relative formula mass
- Diamond, graphite, graphene and fullerenes
What it tested
- Chemical changes30 marks
- Bonding and structure8 marks
- Quantitative chemistry8 marks
- Chemical analysis6 marks
- Atomic structure and the periodic table4 marks
- Energy changes4 marks
- Q1Reactivity, extraction and reduction1 mark
- Q2Atomic size, relative mass and electron structure1 mark
- Q3Atomic size, relative mass and electron structure1 mark
- Q4Ionic and covalent bonding1 mark
- Q5Atoms, compounds, mixtures and the atomic model1 mark
- Q6Higher: limits of the particle model1 mark
- Q7Higher: moles and balancing with moles1 mark
- Q8Acids, salts and pH1 mark
9 more questions
- Q9Higher: ionic equations and half equations1 mark
- Q10Higher: moles and balancing with molesConcentration of solutions1 mark
- Q11Purity, formulations and chromatographyStates of matter and properties of substances6 marks
- Q12Conservation of mass and relative formula massAcids, salts and pH6 marks
- Q13Exothermic and endothermic reactions, reaction profiles4 marks
- Q14Acids, salts and pHHigher: limiting reactants10 marks
- Q15Diamond, graphite, graphene and fullerenesStates of matter and properties of substances6 marks
- Q16Higher: redox, strong and weak acids, electrode half equationsAcids, salts and pH8 marks
- Q17ElectrolysisHigher: redox, strong and weak acids, electrode half equations10 marks
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