They speed up.
It may speed up when heated.
Pressure builds
When matter is heated the particles in the matter gain energy and begin to move or vibrate more depending on the state in which the matter is currently in. If the heat provided is significant enough they can change state too. Hope that was what you were looking for!
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Matter expands when it is heated.
Molecules move faster when heated -- no matter what state they're in.
They speed up.
The speed of the molecules speeds up when the gas is heated.
It may speed up when heated.
rise
Matter expands when it is heated.
When matter is heated it will expand
Matter expands when it is heated.
Pressure builds
Matter usually expands when heated.
When a liquid is heated the particles increase speed and then move farther apart. Also the liquid and bubble up.