Students explore the attractions and motion of atoms and molecules as they experiment with and observe the heating and cooling of a solid, liquid, and gas.

Although the three states of matter are solid, liquid, and gas, not all substances seem to fit perfectly into one of these groups. Take a look at the substance below and see if you can decide whether ...

The difference is mostly due to the fact that air is a gas and the water is a liquid, because density depends a lot on the state of matter. In a solid, the particles are tightly packed ...

Today we are looking at Chart (NYSE:GTLS) and the best and worst performers in the gas and liquid handling industry ... had a satisfactory quarter with a solid beat of analysts’ adjusted ...