Daily Practice

GCSE Science

18th February 1993

5 questions · GCSE · 584 questions in this band

1
Rate and Extent of Chemical Change
A reaction between calcium carbonate and hydrochloric acid produces 72 cm3 of carbon dioxide gas in 30 seconds. Calculate the mean rate of reaction.
2
Rates of Reaction
Explain how a catalyst increases the rate of a reaction without being used up.
3
Reversible Reactions and Equilibrium
State the catalyst commonly used in the Haber process.
4
Organic Chemistry
State the general formula of the alkanes.
5
Alkanes, Alkenes and Crude Oil
State the number of covalent bonds a carbon atom forms in a saturated hydrocarbon.

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