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Unit 13: Thermodynamics                                                                Page 9

                   ·  Changing from a solid to a                         material changes from solid
                       liquid is called melting.                         to liquid.

                   ·  Changing from a liquid to a                    ·  Boiling point is the
                       gas is called boiling,                            temperature at which a
                       evaporating, or vaporizing.                       material changes from liquid
                                                                         to gas.
                   ·  Changing from a gas to a
                       liquid is called condensation.                ·  Condensation point is the
                                                                         temperature at which a
                   ·  Changing from a liquid to a
                       solid is called freezing.                         material changes from gas to
                                                                         liquid.
                   ·  All materials have given
                                                                     ·  Freezing point is the
                       points at which they change
                       from state to state.                              temperature at which a
                                                                         material changes from liquid
                   ·  Melting point is the                               to gas.
                       temperature at which a






















































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