Particles in a gas are:, A. tightly packed together, B. arranged in fixed patterns, C. very far apart, D. unable to move, Water is able to flow because:, A. particles are fixed, B. particles move past one another, C. particles are tightly packed, D. particles cannot move, Dry ice changes directly from a solid to a gas. This process is called:, A. freezing, B. boiling, C. condensation, D. sublimation, Which method would best separate stones from sand?, A. filtering, B. sieving, C. crystallisation, D. settling, Sugar is the ________ in tea., A. solvent, B. mixture, C. solute, D. crystal, Tea is the ________ in a sugar solution., A. solute, B. solvent, C. particle, D. crystal, Which substance is insoluble in water?, A. sugar, B. salt, C. sand, D. coffee, The process in which water changes to a gas is:, A. evaporation, B. freezing, C. condensation, D. melting, Which factor increases the rate of dissolving?, A. larger grain size, B. colder water, C. stirring, D. less movement, Diamond is:, A. a liquid, B. the hardest natural solid, C. a gas, D. a mixture

NATURAL SCIENCES gr6

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