Particle, The tiny pieces that everything is made out of., Pure, a substance made up of only one type of particle., mixture, a substance made up of two or more different types of particles that are not chemically joined., melting, when a solid changes state to a liquid., freezing, when a liquid changes state to a solid., condensing, when a gas changes state to a liquid., boiling, when a liquid changes state to a gas., sublimation, solid changing straight to a gas., melting point, the temperature at which a solid turns into a liquid, this is the same as the temperature that a liquid turns in to a solid., boiling point , the temperature at which a liquid turns into a gas, this is the same as the temperature that a gas turns in to a liquid..

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