Across
- 3. doesn't affect the charge
- 5. protons,neutrons,electrons
- 7. first periodic table of elements
- 8. determines the element
- 11. number of protons and neutrons in an element
- 13. column of elements
- 14. group of elements that share the same features
Down
- 1. the idea that everything is composed of atoms
- 2. easily conductive and shiny
- 4. table that contains all elements
- 6. horizontal row for the elements
- 7. protons plus neutrons
- 9. location of electron around nucleus
- 10. center of an atom
- 12. has a negative charge