Everything that has mass is matter. In normal everyday life we come across matter in three states, solid, liquid and gas. They have a fixed shape and cannot flow The particles cannot move from ...

Students are introduced to the idea that matter is composed of atoms and molecules that are attracted to each other and in constant motion. Students explore the attractions and motion of atoms and ...

This happens whether the substance is a solid, a liquid, or a gas. It’s not easy to see it happen in a solid ... When the bottle is placed in hot water, the heat energy from the water makes the ...