CHEMISTRY UNIT REVIEW CROSSWORD

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Across
  1. 3. the P.T.): A numbered column on the Periodic table
  2. 6. rings around a nucleus that can have zero, one, or two electrons
  3. 8. An element that isn't a metal
  4. 11. letters standing for a chemical element
  5. 12. the P.T.): one of the Horizontal rows on the Periodic Table
  6. 17. A process with released heat
  7. 18. An electron that helps form a chemical bond
  8. 20. Everything is made from this.
  9. 21. A substance that changes during a chemical reaction
  10. 22. Groups of atoms bonded together
  11. 24. Is formed after 2 or more elements are chemically bonded
Down
  1. 1. Has a negative charge
  2. 2. the Result of a chemical reaction
  3. 4. States that mass is neither created nor destroyed by chemical reactions or physical transformations.
  4. 5. Has a neutral charge (no charge)
  5. 7. Has a positive charge
  6. 9. An element that has both properties of a metal and a nonmetal
  7. 10. The number of protons in a atom
  8. 13. The mass of a chemical elements atoms
  9. 14. Man who discovered the Periodic Law
  10. 15. The brain or powerhouse of a cell
  11. 16. Its made from a single type of atom and is a pure substance
  12. 19. A process that requires absorbed heat
  13. 22. A solid that is hard, shiny, malleable, fusible, and ductile
  14. 23. Gas: Include helium, neon, argon, krypton, xenon, and radon