Combined Science: Trilogy 8464: C8.Chemical Analysis Topical Past Paper Questions
AQA GCSE Combined Science: Trilogy (8464) past-paper questions on C8.Chemical Analysis, free. This topic is frequently examined across 7 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
Printer ink is a mixture of chemicals. A student used chromatography to investigate the colours in a printer ink. The student put a spot of the printer ink on the start line. Figure 4 shows the results. Figure 4 Not to scale 1 Explain why the red colour did not move from the star…
Chromatography is used to separate mixtures. Chromatography involves a mobile phase and one other phase. 1 What is the other phase in chromatography? Tick (✓) one box. [1 mark] 2 Why do the substances in the mixture separate in the mobile phase? [1 mark] 3 How many spots will be…
A student investigated the colours in a brown ink using chromatography. Figure 1 shows the apparatus used. Figure 1 Give two errors made by the student. Describe the problem each error would cause. [4 marks] Error 1 ___ Problem 1 ___ Error 2 ___ Problem 2 ___ A different student…
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