Across
- 3. Hydrogen gas
- 4. a group of atoms bunched together
- 6. neutrons and protons are bunched up here
- 8. neutral charge
- 11. Name for element on the periodic table
- 13. water
- 15. Positive charge
- 16. the compounds that you start with in a chemical equation
Down
- 1. the answer or what you get at the end of a chemical equation
- 2. an invisible force that holds atoms together
- 5. on the periodic table
- 7. tiny number
- 9. negative charge
- 10. Oxygen gas
- 12. two different atoms together
- 14. thing that makes up everything