What is a solid made out of?

To help explain the differences between solids, liquids and gases we need to look closely at what they are made of. Scientists have found that all materials are made of very, very tiny particles. read more

Solids are made up of atoms and molecules, just as liquids and gases are.In a solid the atoms fit very closely together. read more

Solid objects that are large enough to see and handle are rarely composed of a single crystal, but instead are made of a large number of single crystals, known as crystallites, whose size can vary from a few nanometers to several meters. read more