The newest 7 of 7 written questions. Open one to see it on the real paper.
Explain why ethene is described as a hydrocarbon.
See it on the paper →State what is meant by a hydrocarbon.
See it on the paper →Fractional distillation separates petroleum into fractions containing substances with similar properties. State the names of two of these properties. and .
See it on the paper →Which statements about naphtha are correct?
See it on the paper →Which energy source is non-renewable?
See it on the paper →State what is meant by the term hydrocarbon.
See it on the paper →is hydrocarbon Q?
See it on the paper →Few candidates were able to explain that ethene is a hydrocarbon because it contains carbon and hydrogen only. A number of candidates suggested that it is because ethene ends with ‘-ene’.
— Examiner report, February/March 2025, 0654/32 Q6(a)(i) (Cambridge)
There was evidence that many candidates had guessed at the answer. Candidates are required to know that petroleum and the fractions obtained from petroleum are mixtures of hydrocarbons, and to describe the complete combustion of hydrocarbons to give carbon dioxide and water.
— Examiner report, May/June 2023, 0654/12 Q26 (Cambridge)
The term hydrocarbon was not well known. Few candidates were able to describe a hydrocarbon as a compound containing carbon and hydrogen atoms only.
— Examiner report, February/March 2022, 0654/32 Q2(a)(i) (Cambridge)
Past papers, syllabus and examiner reports © UCLES (Cambridge University Press & Assessment). Questions are matched to topics from the official syllabus. AssessPro is independent and not endorsed by Cambridge.