Across
- 3. this part of an atom orbits around the nucleus
- 6. model of an atom that shows energy levels
- 7. model of an atom that just shows valence electrons
- 11. this part of the atom has NO charge
- 12. tell you how many energy levels
- 13. protons + neutrons
Down
- 1. elements with characteristics of metals and nonmetals
- 2. tell you the number of valence electrons
- 4. different versions of the same element
- 5. positively charged part of an atom
- 8. the smallest unit of matter
- 9. number of protons
- 10. shiney, ductile and maleable elements
- 11. dull and brittle elements