Across
- 1. Pure substance with only one type of atom
- 5. Two or more atoms bonded together
- 7. Basic unit of matter
- 8. Substance made of two or more different elements
Down
- 2. Negatively charged particle in an atom
- 3. Substance with a pH greater than 7
- 4. Table Chart of all known elements
- 6. Neutral particle found in the nucleus
- 7. Substance with a pH less than 7
- 9. Positively charged particle in the nucleus