| A | B |
|---|
| Matter | anything that has mass and takes up space |
| atom | smallest particle of matter |
| molecules | two or more atoms combined |
| protons | found in nature in nucleus of atom has a positive charge |
| electrons | found moving around the outside of the nucleus of an atom-has a negative charge |
| neutron | found in nucleus of an atom-neutral;no charge |
| solids | have a fixed volume and shape |
| liquid | take shape of whatever they are in and have a fixed volume |
| gas | have no fixed shape or volume |
| plasma | state of matter that resembles a gas; very high in energy and dangerous to living things |
| states of matter | solid, liquid, gas, plasma |
