Materials- States of Matter Crossword Puzzle

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QUESTIONS LIST:

matter : anything that takes up space and has mass.
evaporation : the changing of a liquid to a gas at the surface of the liquid.
diffusion : the spreading out of materials due to the movement of their particles.
melting point : the temperature at which a solid changes to a liquid.
solids : has a definite shape and volume.
sublimation : when a solid changes directly from a solid to a gas.
particle theory : explains the properties of solids, liquids and gases.
freezing point : the temperature at which a liquid changes to a solid.
boiling point : the temperature at which a liquid changes to a gas throughout the liquid.
liquids : has no definite shape and can flow.
gases : has no definite shape and volume.