Chemistry 1

1234567891011121314151617
Across
  1. 4. these are made of bonded atoms
  2. 7. atoms of the same element that have different numbers of neutrons
  3. 8. the outer shell electrons that are used for chemical bonds
  4. 12. the molecules that are created after a chemical reaction
  5. 13. a negatively charged subatomic particle
  6. 14. a subatomic particle with no charge
  7. 15. a building block of every substance
  8. 16. the sum of protons and neutrons in an atom
  9. 17. positively charged subatomic particle
Down
  1. 1. arranged horizontally these signify atoms that add electrons to the same shell
  2. 2. consists of the protons and neutrons in an atom
  3. 3. the number of protons in an atom
  4. 5. the description of a chemical reaction
  5. 6. the molecules that are combined to create a chemical reaction
  6. 9. atoms that have the same number of protons
  7. 10. an atom that has gained or lost at least one electron
  8. 11. arranged vertically these atoms have similar properties