The newest 5 of 5 written questions. Open one to see it on the real paper.
List all the chemical elements that make up carbohydrates.
See it on the paper →On Fig. 7.1, draw a force arrow labelled W to show the weight of the car.
See it on the paper →Which row shows the elements that make up proteins?
See it on the paper →State the three chemical elements that make up carbohydrates.
See it on the paper →State the name of the mineral ions needed to make amino acids.
See it on the paper →The weight of the car acts downwards due to the force of gravity. Some candidates gained credit for this answer. Candidates should be aware that force arrows should touch the object they are acting on.
— Examiner report, May/June 2025, 0653/33 Q7(a)(i) (Cambridge)
Some candidates incorrectly selected option B (proteins being composed only of carbon and hydrogen). proteins contain carbon, hydrogen, nitrogen and oxygen.
— Examiner report, October/November 2023, 0653/12 Q2 (Cambridge)
Generally, candidates found this question demanding. All three chemical elements had to be stated. Incorrect responses included water, other compounds and some metals. Candidates are reminded that chemical elements are found on the periodic table, and compounds form when different elements combine.
— Examiner report, October/November 2023, 0653/33 Q7(a)(ii) (Cambridge)
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