Chapter 9 Austin Lumbrezer

12345678910
Across
  1. 4. ,side to side on the periodic table
  2. 6. ,most abundant metal in earth's crust
  3. 9. ,designed the periodic table of elements
  4. 10. ,two atoms with different number of neutrons
Down
  1. 1. ,a positively charged subatomic particle in the atomic nucleus
  2. 2. ,lightest alkali metal
  3. 3. ,up and down on the periodic table
  4. 5. ,an electron in the outermost energy level of an atom
  5. 7. ,number of protons
  6. 8. ,any material that is made up of only one type of atom