Answer: The states of matter can be solid, liquid, and gas.
Explanation:
The change in the state of matter can change the utility of the materials. Like, water in the liquid state when changed into solid ice can be used as ice cube and in the gaseous vapors can be used for steaming food items.
The stepping stone is a stone which is used for roadside pavements. It is used for walking. It can be prepared using liquid mixture of cement and concrete into a mold and it is converted into solid mass on drying.
