Why do particles move away from each other when heat is added?

Answer 1

When heat is provided to a substance, the particles inside the substances gains the energy and starts vibrating to and fro hitting another particle and it continues.it can even be very in portent to know that heat is really the main thing you have to know.

Answer 2

to know the answer to this question, first you should know that,there is intermolecular force between molecules that keeps them together, there is also intermolecular spaces even in solids molecules.and that the molecules in the solids, liquids and gases are in motion.

so when you heat a solid object, the molecules gain heat energy which increases their motion. when their motion increases the intermolecular spaces increases and the intermolecular force decrease which let to the change of object from solid state to liquid state, the same thing happens with liquids

Answer 3

When heat is applied to an object the particles move faster.

Answer 4

the motion of the particles increases or decreases when the temperature increases or decreases. When added heat to Particles they move faster