Temperature,Heat,and Matter

thermal expansion:the expansion of matter when its temperature is rased.




pressure:the force on each unit of area ofa surface.



melting;the change into a solid to liquid.´


 

vaporization: the change into a liquid to a gas as a molecule atrac each other.



condensation:the change of a gas into a liquid as the molecule attract each other.

freezing:the change into a liquid to a gas.

boiling: the formation of bubbles of vapor that escape from a liquid that is beging heated.