Across
- 3. The smallest particle of an element
- 4. A state of matter where the particles are moving quickly and freely
- 7. Group of two or atoms held together
- 8. Neutral subatomic particle in the nucleus of an atom
- 9. Negatively charges subatomic particle
- 10. Two or more elements chemically bound together
- 12. A substance we start within a chemical reaction
- 13. Anything that takes up space
- 14. Substance that is made up of one type of atom
Down
- 1. The number of protons
- 2. Form of matter with a definite volume but no fixed shape
- 5. State of matter where the particles are held in a fixed position
- 6. Substances produced within a chemical reaction
- 11. Positively charged particle in the nucleus of an atom