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Properties of Object
Matter
| Term | Definition |
|---|---|
| Atom | smallest unit of matter |
| Matter | anything that has mass or volume |
| Examples of matter | Humans, smoke,textbook , water,ladybug ..etc |
| Examples of non-matter | Energy light & sound |
| Mass | How much matter is in something |
| Weight | The pull of gravity on an object |
| Element | Contains only one type of atom |
| Molecule | Two or more atoms that are chemically combined |
| Formula for volume : | length* width* height |
| Formula for density : | mass/volume |
| Earth - Moon mass and weight | Mass stays the same . Weight decreases on the moon because there is less gravity. |
| How can you separate compounds? | By breaking the bonds between two or more atoms |
| Do atoms and molecules move? | Yes,all atoms and molecules move. They vibrate in a solid. They slide in a liquid. They move freely in gas |
| What does it mean if a substance is pure? | It only has one type of component . |