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8.1 Purity, formulations and chromatography

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Question 12
F

Substance Q melts at 218 ∘C218\ ^\circ\text{C}218 ∘C and boils at 338 ∘C338\ ^\circ\text{C}338 ∘C. Substance R melts between 205 ∘C205\ ^\circ\text{C}205 ∘C and 214 ∘C214\ ^\circ\text{C}214 ∘C and boils between 320 ∘C320\ ^\circ\text{C}320 ∘C and 341 ∘C341\ ^\circ\text{C}341 ∘C.

What do these results show?

[1]
A

Q is a mixture and R is a pure substance

B

Both Q and R are pure substances

C

Both Q and R are mixtures

D

Q is a pure substance and R is a mixture

Markscheme

8.1 Purity, formulations and chromatography Questions

  1. GCSE
  2. /Chemistry
  3. /8.1 Purity, formulations and chromatography

40 exam-style questions on AQA GCSE Chemistry 8.1 Purity, formulations and chromatography, covering 8.1.1 Pure substances, 8.1.2 Formulations, and 8.1.3 Chromatography. Each one has a worked solution and a mark scheme showing where the marks go.

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