| A | B |
|---|
| Boiling point | Temperature where a substance changes from liquid to gas (100 degrees C) |
| Chemical change | A change of substance to form a new substance (rust, burning) |
| Condensation | Change in substance from a gas to a liquid |
| Gas | State of matter with fast, free moving molecules. It has no definite shape or volume. |
| Liquid | State of matter with no definite shape, but has volume. It takes the shape of the container it is put in. |
| Mass | Measurement of the amount of matter in an object |
| Matter | Anything that has mass or takes up space |
| Melting point | Temperature at which a substance changes from a liquid to a solid (0 degrees C) |
| Physical change | Change in size, shape or state. No new substance is created. |
| State of matter | Physical form matter takes (solid, liquid, gas, plasma) |
| Solid | State of matter where molecules move slowly and hold their place while vibrating. Has a definite shape and volume. |
| Thermal energy | Energy that comes from heat |
| Thermal expansion | An increase in size of matter when it is heated |
| Vaporization | A change in state from a liquid to a gas |
| Volume | The amount of space a substance fills |
