Term | Definition |
Matter | Everything that has mass and takes up space |
Element | The ingredients that make up all other substances. Can't be broken into other substances. |
Metals | Good conductors of electricity and heat. Can bend without breaking. Most have a gray color and are shiny. |
Non-metals | Do not conduct heat / electricity very well. May be a gas or solid. |
Semi-metals | Sometimes like metals and sometimes like non-metals. |
Atoms | The smallest part of an element that still acts like a element |
Atomic Theory | States every thing is made of atoms |
Compound | A type of matter made up of two or more elements |
Molecule | smallest particle of a compound that is still acts like a compound |
Protons | Positive charge. found in the nucleus |
Neutrons | No charge. Found in the nucleus |
Electrons | Negative charge. Orbits around the nucleus |
solid | Has a definite shape and volume. Particles are very close together, and don’t move past each other. Keeps shape |
liquid | Definite volume but not shape, particles can move past each other. Takes shape of container |
gas | No definite volume or shape. Particles spread out evenly and take shape of container. Can be squeezed into smaller volume |
Plasmas | 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 temp as freezing point. |
Evaporation | When a liquid turns in to a gas |
Condensation | When gas become a liquid. Gas particles touch a cold surface and the temperature drops |