Across
- 3. energy of motion
- 5. combination of elements, like H2O
- 7. energy that is available and ready to go
- 9. atom or molecule with electric charge
- 12. negative particle in an atom
- 13. shiny, malleable substance that conducts electricity
- 14. neutral particle in an atom
- 15. gases like neon, helium, and argon
- 17. things like oxygen, on the periodic table
Down
- 1. table containing all the elements
- 2. elements joining together
- 4. electrons in outer shell of atom
- 6. energy that comes from the planet's heat
- 8. heat energy
- 10. positive particle in an atom
- 11. everything is made of these, very tiny
- 16. energy that comes from the sun