Chemistry Review Crossword

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Across
  1. 3. Cl belongs to the ________ family.
  2. 5. Protons + neutrons = ______________.
  3. 7. Na belongs to the _______ metals family.
  4. 8. In a _______ change, a new substance is made.
  5. 12. Smallest possible piece of an element.
  6. 13. Any particle that doesn't have a charge is ________.
  7. 15. Substance with one type of atom.
  8. 16. Inventor of the periodic table.
  9. 18. Substance with more than one type of atom.
  10. 20. A change where energy is released.
  11. 22. Element that forms a positive ion.
  12. 23. Element that forms a negative ion.
  13. 24. Negative particle outside the nucleus.
  14. 25. Elements like K and Na have symbols from their original ________ names.
Down
  1. 1. __________ electrons are in the outermost shell.
  2. 2. In a _______ change, no new substance is made.
  3. 4. Only family with a full valence shell.
  4. 6. Another word for an electron orbital.
  5. 9. Atom or molecule with a charge.
  6. 10. A ________ compound does not contain ions.
  7. 11. A change where energy is absorbed.
  8. 14. Positive particle in the nucleus.
  9. 17. An metal that can have more than one charge is _________.
  10. 19. Another name for a homogeneous mixture.
  11. 21. When you heat a substance it gains __________.