Across
- 2. Type of compound that contains non-metals only
- 5. Horizontal rows of the periodic table
- 6. Element in Period 4, Group 17
- 7. Workplace Hazardous Materials Information System
- 9. Anything that has mass and takes up space
- 11. Type of compound that contains a metal and a non-metal
- 12. Equal to the number of protons + neutrons in an atom
- 14. Metal ions that can form more than one charge
- 15. Element in Period 3, Group 14
Down
- 1. Vertical columns of the periodic table
- 3. The basic building block of all matter
- 4. The study of matter, its properties, and its changes.
- 8. Equal to the number of protons in an atom
- 10. Ion with a negative charge
- 13. Ion with a positive charge