Question

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Answer 1

17. (i)Particles of matter are very small in size.

(ii)They are continously moving.

(iii)There is force of attraction between the particles.

18. (a)Centrifugation

(b)evaporation

(c)Sublimation

(d)By separating funnel

Answer 2

centrifugation, evaporation or crystallization, sublimation, decantation

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