Term | Definition |
matter | Everything that has mass and that takes up space. |
Element | The ingredients that make up all other Substances. Can't be broken down into other substances. |
Metals | Good conductors of electricity and heat. Can blend without breaking. Most have a gray color. |
Nonmetals | Do not conduct electricity or heat very well. May be a gas or a solid. |
Semimetals | Sometimes like metals and sometimes like nonmetals. |
Atom | The smallest part of an element that still acts like that metal. |
Atomic Theory | States that everything is made of atoms. |
Compound | A type of matter made of two or more elements. |
Molecule | Smallest particle of a compound that still acts like a compound. |
Proton | Positive charge. Found in nucleus. |
Neutron | No Charge. Found in nucleus. |
Electron | Negative Charge. Orbits the nucleus. |
Liquid | Definite volume but not shape, particles can move past each other. Takes shape of it's container. |
Solid | Has a definite shape and volume. Particles are very close together, and don't move past each other. Keeps shape. |
Gas | No definite volume or shape. Particles spread out evenly and take shape of container. Can be squeezed into smaller volume. |
Plasma | Like a gas, but conducts electricity like a metal. Occurs with high temps or electric charge. |
Melting point | When solid to liquid or liquid to solid. Same temperature as freezing point. |
Evaporation | When liquid becomes a gas. |
Condensation | When gas becomes a liquid. Gas particles touch a cold surface and the temperature drops. |