Across
- 1. has an atomic weight of 12.01
- 4. atomic number is 31
- 9. how many protons, neutrons, and electrons are in an element
- 12. a net electric charge from the gain or loss of electrons
- 14. the highest element to the right on the periodic table
- 15. the first element on the periodic table
- 16. part of an atom starts with p
Down
- 2. center of an atom
- 3. horizontal rows on the periodic table
- 5. a group of atoms bonded together
- 6. an attraction of oppositely charged ions
- 7. has an atomic mass of 195.08
- 8. what holds atoms together
- 10. part of an atom starts with n
- 11. below the element with 4.00 atomic mass
- 13. part of an atom starts with e