Term | Definition |
Matter | Everything that has mass and takes up space |
Element | The ingredients that makeup all other substances. Cant be broken down into other substances. |
Metals | Good conductors of electricity and heat. Can bend with out breaking. Most have gray color. |
Nonmetals | Don't conduct heat/electricity very well. may be gas or a solid. |
Semimetals | Sometimes like metals and sometimes like nonmetals. |
Atom | The smallest part of an element that still acts like that element. |
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 that compound. |
Proton | Positive charge. Found in the nucleus. |
Neutron | No charge.found in the nucleus. |
Electron | Negative charge. Orbits 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 |
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 temp as freezing point |
Evaporation | When liquids become a gas. |
Condensation | When gas become a liquid. Gas particles touch a cold surface and the
temperature drops |