Across
- 2. This has 4 protons.
- 4. This has 3 protons.
- 8. They have properties between those of metals and non metals.
- 11. Bases have a pH level, greater and including ____.
- 13. What you call an atom that has a positive charge.
- 15. A substance that can't be broken down
- 16. Particles with no charge.
- 18. Negative charged particles.
- 19. Acids have a pH level, lower and including ____.
- 20. This has 1 proton.
Down
- 1. This is a table that has all the elements in it.
- 3. When an atom gains an electron, it has a ____ charge.
- 5. Positive charged particles.
- 6. What you call an atom that has a negative charge.
- 7. This has 2 protons.
- 9. Central region of the atom.
- 10. What can the amount of protons tell you.
- 12. Is chemistry a good subject
- 14. This has 5 protons.
- 17. When an atom loses an electron, it has a ____ charge.