state of mater
Matter means everything around us — anything that takes up space and has weight, like air, water, or a rock. Scientists say matter can exist in three main forms, called states of matter: solid, liquid, and gas.
Solid
A solid keeps its own shape. The particles inside a solid are close together and don’t move much — like in a popsicle, rock, or a table.
Liquid
A liquid doesn’t have its own shape. It takes the shape of whatever container it’s in, but it always keeps the same amount or volume. The particles in a liquid are a bit apart and move around freely — like water or juice.
Gas
A gas spreads out to fill the whole space it’s in and doesn’t have a fixed shape or size. Its particles are far apart and move very fast — like air or the steam coming from a pot of boiling water.