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 ...

Matter is the "stuff" that makes up the universe ... They can change state, usually when they are heated or cooled. For example, liquid water turns into water vapour when it is heated enough ...

changing from a solid to a liquid, for example. This basic model is, however, just that: there are many, many more states of matter out there that it doesn’t capture. The next most familiar is ...