Give an example of a substance that can exist in different physical states. State its physical properties,chemical composition,and characteristics.

(N/A) Water is an example of a substance that exists in three different physical states: solid (ice),liquid (water),and gas (water vapor or steam).
The physical properties of ice,water,and steam are significantly different.
However,the chemical composition of all three states is identical,represented by the formula $H_2O$.
The characteristics of these three states depend on the energy of the molecules and the arrangement of the water molecules.