Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
12th April 2018
- 1Rate 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.
- 2Rates of Reaction
Explain how a catalyst increases the rate of a reaction without being used up.
- 3Reversible Reactions and Equilibrium
State the catalyst commonly used in the Haber process.
- 4Organic Chemistry
State the general formula of the alkanes.
- 5Alkanes, Alkenes and Crude Oil
State the number of covalent bonds a carbon atom forms in a saturated hydrocarbon.
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