Across
- 1. a chemical with kr as a symbol its colorless and odorless
- 6. chemical element
- 9. a stable subatomic particle with a negative charge
- 10. its a heavy metal denser then most tings
- 11. a chemical element and its atomic
- 13. an oxide containing two atoms of oxygen in its molecules
- 14. pulse and minis
Down
- 2. is colorless tasteless and smelless
- 3. the unit used to measure energy or work
- 4. hard and the body needs it for growth and development
- 5. its used to make nitric acid and dyes
- 7. its a chemical you use it balloons
- 8. what makes up everything
- 12. an alkaline earth metal
- 15. its like air