Science

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Across
  1. 2. All the elements together
  2. 5. Number How many protons there are
  3. 8. 2 or more elements
  4. 10. Negative
  5. 11. Cloud Where the electrons are
  6. 13. Substance One type of atom
  7. 14. A pure substance
  8. 15. Atom Neutron
  9. 16. Number of atoms
  10. 18. Neutral
  11. 19. Anything with volume and mass
Down
  1. 1. Number of molecules
  2. 3. Makes up everything
  3. 4. mass Protons + Neutrons
  4. 6. 2 or more atoms put together
  5. 7. Symbol 1-3 letters labeling and element
  6. 9. Positive
  7. 12. Where protons are
  8. 16. Particle Protons, Neutron, and electrons
  9. 17. Formula Chemicals with Coefficients and Subs