The state of matter is a deceptively simple concept. It turns out that any material, no matter what it is made of, can exist in one of three forms: solid, liquid or gas. These are categories of ...

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 ...

In this interactive, adjust the temperature and pressure of three common substances and watch them morph into different states of matter. Along the way, you'll see just how inextricably ...