In normal everyday life we come across matter in three states, solid, liquid and gas. ... but because the bonds between separate molecules are usually less tight, liquids expand more than solids.

Water molecules, for example, will change from a solid state to a liquid state at temperatures over 0 degrees Celsius, and from a liquid to a gas at temperatures over 100 degrees Celsius.

The molecules that make up a gas are about 100 to 1000 times further apart than the molecules of a solid or liquid. Imagine what a tablespoon of water looks like. If that same number of molecules was ...

Note: Some solids, liquids, and gases are made of atoms, and some are made of molecules. Since the concepts covered in Chapter 1 apply to both atoms and molecules, the term “particle” is used as a ...

Water’s just plain old water, right? Not when you trap it inside a tiny channel, it seems, because then it behaves like no other solid, liquid or gas.

From these measurements, they characterized the phase of the molecules and were able to reproduce the transitions between gas, liquid, and solid, that was expected.

You probably learned in school that there are three states of matter: solid, liquid and gas. Think ice cube, a puddle of water and steam. Maybe you also learned about a fourth state, known as plasma .