Across
- 5. Its chemical compound is Pt
- 6. There are many of these
- 8. These can be found at the top left corner of each element
- 9. These make up everything
- 12. An atom that loses or gains electrons/protons
- 14. Is a part of the chemical compound of water
- 16. These have a positive charge
- 18. Its chemical compound is Ag
- 19. Another method of identifying an element
Down
- 1. Another classification of an element
- 2. One classification of an element
- 3. These have a negative charge
- 4. Its chemical compound is He
- 7. These have a neutral charge
- 10. Its chemical compound is Hg
- 11. A group of 2 or more atoms
- 13. One method of identifying an element
- 15. Its chemical compound is Au
- 17. Is the other part of the water chemical compound
- 18. These are only 1 or 2 letters