Atomic Theory

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Across
  1. 1. Found in the shells
  2. 6. When two atoms bond together
  3. 7. Different types of elements
  4. 9. List of the elements
  5. 12. columns of periodic table
  6. 13. When atoms gain electrons
  7. 14. Outer most electrons
Down
  1. 2. When two different atoms bond together
  2. 3. Atoms with different numbers of neutrons
  3. 4. Area of space where electrons reside
  4. 5. Neutral subatomic particle
  5. 8. rows of periodic table
  6. 9. Positive subatomic particle
  7. 10. When atoms lose electrons
  8. 11. Building blocks of matter