End of the Year Chemistry Bonus

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Across
  1. 3. Is the smallest particle of a contently bonded compound
  2. 4. Who created the first periodic table
  3. 6. The number of protons in the nucleus
  4. 8. Polar molecules can only be dissolved by these
  5. 10. Block d on the periodic table is made up of this
  6. 12. Who discovered the neutron
  7. 14. Donates one proton per molecule
  8. 15. Species produced when a base accepts a hydrogen ion from an acid
  9. 19. A mixture that is not uniform
  10. 20. Who discovered electrons
Down
  1. 1. Prefix that means 1
  2. 2. Chemical reactions that do not go to completion
  3. 5. The mass of an atom given in amu
  4. 7. Sharing of electron by atoms so that all atoms involved achieve a filled valence level
  5. 9. Ionic compounds are called what
  6. 11. A solid produced during a chemical reaction
  7. 13. When two liquids do not mix
  8. 16. A small amount of solute per solvent quantity
  9. 17. These tend to form covalent bonds
  10. 18. A negatively charged ion