Question

Most matter expands on heating and on cooling it contracts. True or false?​

Answer 1

Answer:

TRUE

Most matter expands when heated and contracts when cooled, a principle called thermal expansion. The average kinetic energy of the particles increases when matter is heated and this increase in motion increases the average distance between its atoms.

Answer 2

Most matter expands when heated and contracts when cooled, a principle called thermal expansion. 

So the answer is True .