Across
- 1. one through twelve
- 2. is emitting radiation (it is ___)
- 4. element one
- 6. water is an example
- 8. negative subatomic particle
- 11. element 92
- 13. creates helium-4
- 17. number of particles
- 19. gamma, beta, alpha
Down
- 1. home to all the elements
- 3. smallest unit of matter
- 5. there are 118
- 7. a non-metal and a metal
- 9. glucose, for example
- 10. a step in the scientific method
- 12. element seven
- 14. a mix of metals
- 15. pH 8-12
- 16. two non-metals
- 18. pH 1-6