Periodic Table
Across
- 3. A unique element
- 7. Has no charge
- 9. Elements that are no metals
- 14. A noble gas with an h
- 15. Used to make water along with hydrogen
- 16. Elements that have some properties of metals and non metals
- 17. Has a positive charge
- 18. The first group of the periodic table is called
- 19. The last group of the table
- 20. The horizontal collums
Down
- 1. Has 5 protons
- 2. Has a negative charge
- 4. 2 or more different elements combined in a fixed ratio
- 5. Has the initial "K"
- 6. The vertical rows
- 8. A very reactive element that an "N"
- 10. The number that determines the identity of an element
- 11. Elements that are generally good conductors of heat and electricity
- 12. Used to find the number of neutrons in an atom
- 13. 2 or more of the same element