Daily Practice · GCSE Science

Daily Practice - GCSE Science

6th January 1999

5 questions · GCSE · 584 questions in this band

1
Exothermic and Endothermic Reactions
State the energy transfer that occurs during an endothermic reaction.
2
Bond Energies, Cells and Fuel Cells
State the two substances that react inside a hydrogen fuel cell.
3
Rate and Extent of Chemical Change
State what is meant by a catalyst.
4
Rates of Reaction
In the gas-volume required practical measuring how concentration affects rate, state one variable that should be controlled.
5
Reversible Reactions and Equilibrium
State what is meant by dynamic equilibrium.

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