Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
14th October 2024
- 1Reactivity, Acids and Salts
Name the salt made from zinc oxide and nitric acid.
- 2Electrolysis
In the industrial extraction of aluminium, explain why the carbon anodes need to be replaced regularly.
- 3Energy Changes
A reaction profile shows the reactants at 220 kJ and the products at 340 kJ. State whether the reaction is exothermic or endothermic.
- 4Exothermic and Endothermic Reactions
State the energy transfer that occurs during an endothermic reaction.
- 5Bond Energies, Cells and Fuel Cells
State the two substances that react inside a hydrogen fuel cell.
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