Across
- 4. The process where liquid turns into gas
- 6. Subatomic particles that has a positive charge
- 8. An element with a relative atomic mass of 16
- 11. An electrically charged atom or group of atoms
- 12. Two or more atoms bonded tightly together
- 13. Matters which have fixed volumes and shapes
Down
- 1. The process of changing something from a solid into a liquid
- 2. Subatomic particles that has a negative charge
- 3. The 18th element on the period table
- 5. Substances formed by physically mixing two or more substances
- 7. A chemical element with the symbol Ag
- 9. Subatomic particles that has a neutral charge
- 10. Substances formed by chemically bonding two or more elements