Matter is made up of tiny particles called atoms., Particles in solids are packed closely together., The particles in liquids flow., Particles in a gas have lots of kinetic energy., At high temperatures, particles move very fast., At low temperatures, particles move slowly., Ice changing to liquid is called melting., Liquid changing to gas is called evaporation., Sublimation is when solids turn to gas., Homogenous mixtures are uniform in colour., Heterogenous mixtures can be easily separated., Sand and marbles are insoluble in water., Sugar and salt are soluble in water., A solute and solvent combine to form a solution., Mixtures can be separated by hand-sorting..

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