Daily Practice · GCSE Science

Daily Practice - GCSE Science

4th October 1997

5 questions · GCSE · 584 questions in this band

1
Bond Energies, Cells and Fuel Cells
State the two substances that react inside a hydrogen fuel cell.
2
Rate and Extent of Chemical Change
State what is meant by a catalyst.
3
Rates of Reaction
Explain why increasing temperature increases the rate of a reaction, referring to both the frequency and the energy of collisions.
4
Reversible Reactions and Equilibrium
State the effect of increasing the temperature on the position of equilibrium of a reaction whose forward reaction is exothermic.
5
Organic Chemistry
Name the process used to separate crude oil into fractions.

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