Find out more about this state of matter. Science Trek is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, Amazon Fire TV ...

Step into our online science lab and learn more about states of matter. Interact with the activity to see what happens when different substances change state. There are three main states of matter ...

The three states of matter can be represented by the particle model. This model explains the properties of substances in their different states, as well as changes of state. Interactive activity ...