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Matter and its Interactions

Across
Has a fixed shape and a fixed volume.
The surface particles of a solid, gain enough energy, to change directly into a gas.
The measure of the average kinetic energy of the particles in an object or substance.
The change of state from a liquid to a gas, but only at the surface of a liquid.
The total energy, Kinetic and Potential, of all particles in an object or substance.
The temperature at which a liquid boils.
The temperature that a substance melts at.
The change in state from a liquid to a gas.
Down
Has a fixed volume but no fixed state.
The change in state from a gas to liquid.
Has no fixed volume or fixed state.
The temperature that a substance freezes at.