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1.1 The particle model

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Question 11
F

The graph shows a pure substance heated steadily from the solid state at constant pressure. No chemical change occurs.

image

What is happening at point P?

[1]
A

The substance is melting; particles are leaving fixed positions while remaining close together

B

The substance is boiling; particles are becoming widely separated

C

The solid particles are becoming larger while staying in the same arrangement

D

The substance has completely melted and its temperature is increasing

Markscheme

1.1 The particle model Questions

  1. GCSE
  2. /Chemistry
  3. /1.1 The particle model

48 exam-style questions on OCR GCSE Chemistry 1.1 The particle model, covering 1.1.1 The particle model and changes of state and 1.1.2 Limitations of the particle model. Each one has a worked solution and a mark scheme showing where the marks go.

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