Across
- 1. A form of matter made up of one type of atom
- 3. One or two letter abbreviation used to represent an element
- 5. Neutral particle in the nucleus of an atom
- 6. Tiny particles that make up matter
- 8. Negatively charged particle that circles the nucleus in electron shells
Down
- 1. Area around the nucleus that contain the electrons
- 2. Center of an atom; contains protons and neutrons
- 4. Anything that has mass and takes up space
- 7. Positively charged particle in the nucleus of an atom