| Term | Definition |
|---|---|
| MATTER | Everything that has mass and takes up space. |
| ELEMENT | Substance made of only one kind of atom. |
| METALS | Good conductors of electricity and heat. Can bend without breaking. Most have a gray color. |
| NONMETALS | Do not conduct heat / electricity very well. May be a gas or a solid. |
| SEMI-METALS | sometimes like metals and sometimes like nonmetals |
| ATOM | The basic building block of matter. Can't be any smaller. |
| ATOMICTHEORY | states that everything is made of atom. |
| 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 the nucleus |
| NUETRON | No charge. Found in the nucleus |
| ELECTRON | Negative charge. Orbits the nucleus. |
| SOLID | Has a definite volume or shape. Particles are very close together, and don’t move past each other. Keeps its shape. |
| LIQUID | Has a 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 a smaller volume |
| PLASMA | Like a gas, but conducts electricity like a metal. Occurs with high temps or electric charge. |
| MELTING POINT | Solid to liquid or liquid to solid. Same temperature as freezing point. |
| EVAPORATION | When liquids become a gas |
| CONDENSATION | When gas becomes a liquid. Gas particles touch a cold surface and the temperature drops. |
| BOILING POINT | The temperature at which evaporation occurs |
| MIXTURE | Two or substances that mix together but each keeps its own identity |
| SOLUTION | A mixture where substance spreads out evenly and will not settle |
| SOLUTE | The substance being dissolved |
| SOLVENT | What the substance is dissolved in |
| SOLUBILITY | A way to measure how much a material dissolves into another |
