Across
- 2. vertical column of elements
- 4. element type; excellent conductors
- 6. element type; okay conductors, properties of both metals and nonmetals
- 8. elements in Groups 1,2,and 13-18
- 12. number how many protons are in an atom
- 13. same atoms with different # of neutrons
Down
- 1. element type; poor conductors
- 3. when elements are arranged in order of atomic number, physical and chemical properties repeat
- 5. subatomic particle, negative charge
- 6. number of protons + neutrons
- 7. Scientist who arranged the periodic table
- 9. subatomic particle, positive charge
- 10. subatomic particle, no charge
- 11. the horizontal row of elements