Emerald Robinson: Hi! I am Emerald Robinson and in this What Is video. We are going to investigate a State of matter called a solid.
Solids are materials that keep their form that is solid don't change their shape or expand the fit the container that they are in. Although they are many different solids there are a few characteristics so they have in common.
First the particles in a solid are arranged so that they remain close to one another. Now this does not mean that there is no movement at all. Electrons still orbit the atoms nucleases and the atoms themselves vibrant or giggle, but the molecules in a solid always stay in close proximately.
Second, solids can't be compressed because they is not a lot of space between the atoms, they can't be squeeze together any closer then they already are. Some times scientist says that solids are a condensed phase of matter.
Third, in general, solids have melting and bowling planes that are higher than room temperature. Solids are sometimes classified by how their atoms are arranged. Now the atoms in a substance are in a pattern, the solid is known as a Crystal. Common crystal includes metal, ceramic and diamonds, which are large, single crystals.
If the atoms in a substance are not arranged in pattern the solid is called Amorphous which means without a form. Common Amorphous solids include plastics and glass. Those are the times solids are not made up all a one kind of atom and even may consistently have a same material. These types of solids are called mixtures or more scientifically composites.
Those are the things we see everything our composites, especially things in nature like rocks, wood and soil.