Daily Practice

GCSE Science

11th August 1987

5 questions · GCSE · 584 questions in this band

1
Electrolysis
State the name given to the negative electrode in electrolysis.
2
Energy Changes
A reaction profile shows the reactants at 220 kJ and the products at 340 kJ. State whether the reaction is exothermic or endothermic.
3
Exothermic and Endothermic Reactions
State what is meant by the activation energy of a reaction.
4
Bond Energies, Cells and Fuel Cells
State whether forming a new chemical bond requires energy or releases energy.
5
Rate and Extent of Chemical Change
State the four factors that can increase the rate of a chemical reaction.

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