When you place a solid, a liquid, and a gas into separate closed containers, each state of matter behaves differently in terms of shape and volume.
Solid
Solids have a definite shape and volume. When you place a solid into a closed container, it retains its original shape and does not change. The particles in a solid are closely packed together and vibrate in place, which keeps the solid’s structure stable.
Liquid
Liquids have a definite volume but take the shape of their container. When you pour a liquid into a closed container, it will fill the bottom part of the container but will not change its volume. The particles in a liquid are less tightly packed than in a solid and can move around, allowing the liquid to adapt to the shape of the container.
Gas
Gases do not have a definite shape or volume. When you place a gas in a closed container, it will expand to fill the entire space available, regardless of the container’s shape. The gas particles are far apart and move freely, which is why they spread out to occupy the entire volume of the container.
In summary, solids maintain their shape and volume, liquids maintain their volume but take the shape of the container, and gases take both the shape and volume of the container they are in.