Across
- 2. What element has an atomic number of 1?
- 4. The chemical symbol for Phosphorus is...?
- 6. What is Tin's (Sn) atomic number?
- 7. What element's atomic number is 8?
- 8. Is Helium a metal or a nonmetal?
- 10. Carbons atomic number is what?
- 13. The neutral part of an atom is called a?
- 14. True or false, atoms protons equal the number of electrons.
Down
- 1. What element's chemical symbol is Fe?
- 3. What is the negatively charged particle in an atom called?
- 4. What is the positively charged particle in an atom called?
- 5. Are metals or metalloids considered malleable(can hammer into shapes)?
- 9. The center of an atom containing protons and neutrons is called?
- 11. Is Boron a metalloid or a nonmetal?
- 12. What element has an atomic mass of 20.18?
- 13. Are gases considered metals or nonmetals?