WAEC Physics 2011 Theory — Question 4

Question 4 of 39 from the West African Examinations Council (WAEC) Physics 2011 Theory paper, with the correct answer and a full explanation.

PART II - 2(a) Explain diffusion.

Model answer

Diffusion is the tendency of molecules to migrate to fill an empty space due to their random thermal or molecular motions. In diffusion, the molecules move from a region of high concentration to a region of low concentration.

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