| Term | Definition |
| Matter | Anything that has mass and takes up space |
| Buoyancy | The less density an object has the more buoyant an object is |
| Density | The more density an object has the less buoyant an object will be |
| Evaporation | When a liquid turns to gas |
| Condensation | When a gas changes to a liquid |
| Sublimation | When a solid turns to a gas without going through the liquid state |
| Volume | Length x width x height |
| Metal | Shiny, Bendable, & Conducts heat |
| Mixture | Different materials that are put together does not form a compound; they are easily separated |
| Solution | Different materials that are put together that form a compound and can not be easily separated |
| Solid | particles are tightly packed together, have a certain shape, and vibrating particles |
| Liquid | Particles are more loosely packed together, they take the shape of their container, and particles flow past each other |
| Gas | Particles are very loosely packed together, move quickly and wildly around |
| Dew | Formed by condensation when a gas turns to a liquid |