A hydrocarbon burns completely in oxygen. What happens to the carbon and the hydrogen in the hydrocarbon?
The carbon and the hydrogen are both reduced.
The carbon and the hydrogen are both oxidised.
The carbon is oxidised and the hydrogen is reduced.
The carbon is reduced and the hydrogen is oxidised.
40 exam-style questions on AQA GCSE Chemistry 7.1 Carbon compounds as fuels and feedstock, covering 7.1.1 Crude oil, hydrocarbons and alkanes, 7.1.2 Fractional distillation and petrochemicals, 7.1.3 Properties of hydrocarbons, and 7.1.4 Cracking and alkenes. Each one has a worked solution and a mark scheme showing where the marks go.