Like cars, lots of things happen: they can "bounce" off each other, they can 'smash' into pieces, or they can pass right by each other.
They speed up.
The particles spread out and 'jumble' . Hope this helps ;) x
It may speed up when heated.
it goes up
it heats up and the particles match together
The energy of its particles increases, so as the particles speed up move faster causing its heating up.
The motion of particles is accelerated.
The molecules that make up the rock vibrate faster, with greater velocity.
The particles in a liguid are bonded (not as strongly as a solid which is why it flows.) when it is heated the particles vibrate and eventually the bonds break and the particles break away. This is evaporation.
The speed of the gas particles will increase as they are heated. That is why the pressure in a container increases. The particles are hitting the walls of the container with more force as they are heated.
they get excited and move around faster
when water is heated the particles speed up, therefore gaining kinetic energy. the faster the particles move the further apart they become, therefore leading to the possibility of changing state. such as water to water vapor or ice to water.
They expand causing them to move in the only direction available, up the thermometer.
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The particles start moving faster and the matter expands.
if they are heated then they turn to a liquid, if that are a soled well they are hard like ice
Thermal expansion occured.