Across
- 2. Negatively charged particle which orbits the nucleus
- 4. Chemical symbol for a molecule or compound
- 6. Two or more atoms bonded together
- 7. Substances which take part in a reaction
- 9. Number of protons and neutrons added together (2 words)
- 13. Number of protons
- 15. Substances produced by a reaction
- 17. Two or more elements bonded together
- 18. Temperature at which a solid melts (2 words)
- 20. Layers in which electrons orbit (2 words)
Down
- 1. Disintegration of materials to their constituent atoms
- 3. Burning fuels in oxygen
- 5. Able to be bent and hammered into shape
- 8. Simple chemical containing only one type of atom
- 10. Positively charged particles in the nucleus
- 11. Contains both protons and neutrons
- 12. Able to be stretched to a wire,
- 14. Atom or group of atoms which has lost or gained electrons
- 16. A substance which allows heat and electrical current to pass through it
- 19. Neutral particle found in the nucleus
- 21. Adding a layer of zinc to a metal