Questions: Energy changes
Pick a question type. Each time you get new numbers. Free ones are marked free.
Exothermic and endothermic reactions
- Exothermic or endothermic from temperaturesChoose, 2 marks, free
- Everyday exothermic and endothermic reactionsChoose, 1 mark, free
- Where the energy goesChoose, 1 mark, free
- Using exothermic and endothermic reactionsChoose, 1 mark, free
- Picking the exothermic reaction from dataChoose, 1 mark, free
- Why a reaction mixture gets hotExplain, 2 marks, free
- Bonds and exothermic reactionsChoose, 1 mark, free
Required practical: temperature changes
- Mean temperature riseCalculate, 1 mark, free
- Variables in the temperature change practicalChoose, 1 mark, free
- Why a polystyrene cup with a lidChoose, 1 mark, free
- Maximum temperature from two linesDetermine, 3 marks, free
- Spotting an anomalous resultChoose, 1 mark, free
- Plan: temperature change of a neutralisation (6 marks)Describe, 6 marks, free
- Temperature change and uncertaintyCalculate, 3 marks, free
- Biggest temperature rise from a tableCalculate, 1 mark, free
Reaction profiles
- Activation energy and energy change from a profileDetermine, 2 marks, Plus
- Reading the type of reaction from a profileChoose, 1 mark, Plus
- Activation energy from energy valuesCalculate, 2 marks, Plus
- What a catalyst does to the profileChoose, 1 mark, Plus
- What activation energy meansChoose, 1 mark, Plus
- The sign of ΔHChoose, 1 mark, Plus
- How much a catalyst lowers the activation energyCalculate, 2 marks, Plus
- Activation energy of the reverse reactionCalculate, 2 marks, Plus, Higher tier
Bond energies
- Bond energies: hydrogen and a halogenCalculate, 3 marks, Plus, Higher tier
- Bond energies: burning methaneCalculate, 3 marks, Plus, Higher tier
- Bond energies: making ammoniaCalculate, 3 marks, Plus, Higher tier
- Bond energies: hydrogen burningCalculate, 3 marks, Plus, Higher tier
- Bond energies: adding hydrogen to etheneCalculate, 3 marks, Plus, Higher tier
- Energy needed to break the bondsCalculate, 2 marks, Plus, Higher tier
- Finding an unknown bond energyCalculate, 3 marks, Plus, Higher tier
- Breaking and making bondsChoose, 2 marks, Plus, Higher tier
- Energy released for more than one moleCalculate, 1 mark, Plus, Higher tier
Chemical cells and fuel cells
- Cell voltage from a reactivity tableCalculate, 2 marks, Plus, Chemistry only
- Which pair gives the biggest voltageChoose, 1 mark, Plus, Chemistry only
- Cells joined in seriesCalculate, 1 mark, Plus, Chemistry only
- Rechargeable and non-rechargeable cellsChoose, 1 mark, Plus, Chemistry only
- Hydrogen fuel cellsChoose, 1 mark, Plus, Chemistry only
- Fuel cells against batteriesChoose, 1 mark, Plus, Chemistry only
- Hydrogen fuel cells or batteries for a delivery van (6 marks)Evaluate, 6 marks, Plus, Chemistry only
- Which metal is the negative electrodeChoose, 1 mark, Plus, Chemistry only
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