Just Say No!

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Across
  1. 3. A chemical element that makes up about four-fifths of the atmosphere of the Earth
  2. 5. particle with no charge, found in the nucleus of an atom
  3. 6. also known as scientific law, expresses generally observed behavior(2)
  4. 7. chemical reaction between an acid and a base to produce a salt and water
  5. 9. (-COOH)
  6. 13. the central part of an atom that contains the protons and the neutrons
  7. 14. ten to the negative ninth power
  8. 15. a large nucleus is split into two smaller nuclei(2)
  9. 16. a saturated nine carbon compound
  10. 18. process by which atoms lose electrons
  11. 19. element with 10 protons
Down
  1. 1. A hydrocarbon that makes a great fuel with this general formula Cn H2n+2
  2. 2. Where the electrons are most likely to be found
  3. 3. elements that are poor conductors of heat and electricity, are brittle, have a low melting point, and usually gain electrons in a chemical reaction
  4. 4. ionic equation no spectator ions allowed!
  5. 6. the physical state of elements or compounds that are taking part in a chemical reaction(3)
  6. 7. 1865, the periodic pattern of the law of octaves
  7. 8. making full outer valence shells (2)
  8. 10. group of elements with a full valence shell of electrons(2)
  9. 11. Acid found in DNA and RNA
  10. 12. When solute particles dissolve from a concentrated solution to a dilute one
  11. 15. form the basic structural unit of nucleic acids such as DNA.
  12. 16. opposite of "like dissolves like", has symmetrical geometry
  13. 17. the SI unit of force
  14. 18. atomic number 8