Across
- 2. what pennies are made out of
- 5. found in bananas
- 6. the basic building block of all matter
- 7. found on pages 90-91 in the resource book
- 13. a state of matter that has no definite volume or shape
- 14. its a very valuable metal
- 15. a particle comprised of two or more atoms
- 17. the only element named after our country
- 19. a state of matter that has a definite shape but no definite volume
- 21. makes balloons float and your voice high
Down
- 1. superman's home planet
- 3. symbol of Pu
- 4. two atoms of this element makes water
- 8. a charged atom
- 9. the number of protons in the nucleus
- 10. we normally stuff it in our pencils
- 11. a substance made entirely out of one type of atom
- 12. atomic number 12
- 16. an extreme necessity for breathing
- 18. found in milk
- 20. a source of light