There are three state of matter; solid, liquid and gas. The three states of matter behave differently from each other base on how atoms, molecules, and/ or irons (particles) are attracted to each other.
Solids have a definite shape and volume because of how strongly the particles in solid are attracted to each other. Example of solid; rock, wood, sand, ice and chromium.
Liquids do not have a definite shape because particles in liquids are not strongly enough attracted to each other to stay in a fix position like in solids. This enables liquids particles to move pass each other causing liquids to flow and assume the shape of their container. However, liquids have a definite volume. Example of liquid; water, honey, household beach, blood, mineral oil and gasoline.
Gas is a type of matter that has no definite volume or shape. This is because gas particles are weakly attracted to each other causing gas particles to expand to fill the space around them and assume the shape & volume of their containers. Example; water vapour, nitrogen, natural gas, oxygen and carbon dioxide.
N.B. Water (H2O) can exist in all three states of matter based on the amount of energy it absorbs or release.