Science

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Across
  1. 7. A pure substance
  2. 9. Total number of protons in an element
  3. 13. Average weight of an atom
  4. 14. Represents how many orbitals an atom has
  5. 15. Inside Heat
  6. 16. Change in form, color, or appearance
Down
  1. 1. Heat is released
  2. 2. The energy levels around the nucleus
  3. 3. Negative charge particle
  4. 4. Positive charged particle
  5. 5. "No Charge" particle
  6. 6. A change in which a new substance is formed
  7. 8. Includes Neutrons and Protons
  8. 10. Scientist that created the modern atomic structure
  9. 11. Building Block
  10. 12. There are 18 of them in the periodic table