What happens to the particles of an object as temperature is added to it or taken away from it

If temperature added

If temperature is added to the object, the particles of the object vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the space of matter of the object. This results in increased molecular motion, object expands and takes up more space

If temperature taken away

If temperature is taken away from object, the particles vibrate slower. The atoms can get closer result in the matter contracts.

In both cases the mass is not changes. and it happens in all solids, liquids and gases

im pretty sure its b

the answer is c.the valence of the atoms combine .