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Cambridge Secondary (7-9). Stage 8. MCE Science. Workbook - Unit 9: Pressure and Diffusion - Question 31

Cambridge Secondary (7-9) · Unit 9: Pressure and Diffusion

Question 31

Complete these sentences. Use the words from the box: fewer, low, high, particles, more.

Diffusion is when particles from one substance spread out through the particles of another substance.

Diffusion occurs when particles move from an area of _____ concentration to an area of _____ concentration. In an area of high concentration, there are _____ particles. In an area of low concentration, there are _____ particles.
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