Most substances can exist as a solid, liquid or gas. They can change state, usually when they are heated or cooled. For example, liquid water turns into water vapour when it is heated enough ...

Solids, like ice or concrete, have a fixed shape and cannot be compressed easily. evaporating - the process of a liquid turning into a gas close gasOne of the three states of matter. Gases ...

That creates a constant risk of collision for active satellites and for the International Space Station — a problem so severe that several surveillance networks across the globe ...