O-LevelChemistryBonding & Structure5070/11 · May/June 2024 · Q11 Mark

A scientist heats a sample of a liquid. The scientist measures the temperature of the sample and plots a graph of the temperature against time. Which statements are correct? 1 Between points W and X, the temperature increases and the particles move faster. 2 Between points X and Y, there is no change in the temperature because energy is needed to change a liquid into a gas. 3 Between points Y and Z, the particles move further apart.

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A1, 2 and 3

B1 and 2 only

C1 and 3 only

D2 only

✓ Correct answer

A: 1, 2 and 3

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Topic: Bonding & Structure, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2024 Paper 1 Variant 1, question 1.

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