Unit 1 Atomic Structure & the Periodic Table

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Across
  1. 3. Fluorine has _________ valence electrons.
  2. 7. Horizontal rows on the periodic table are called ________.
  3. 8. ____________ is the most reactive metal on the periodic table.
  4. 10. the number of protons in an element
  5. 12. smallest particle of a substance that still retains the properties of that substance
  6. 13. What type of compounds are named using prefixes.
  7. 15. ____________ is the most reactive nonmetal on the periodic table.
  8. 16. Groups on the Periodic table are also called ______________.
  9. 17. Subatomic particles with no charge
  10. 18. ____________ Said that matter is composed of tiny, indivisible particles called atoms.
  11. 20. ___________ has six protons.
Down
  1. 1. _________ has fourteen neutrons.
  2. 2. _______ bonds are formed from the sharing of Electrons between Nonmetals.
  3. 4. Negatively charged subatomic particles
  4. 5. the number of protons + neutrons
  5. 6. Positively charged subatomic particles
  6. 9. _____________ are located between metals (Left) and nonmetals (right) on the periodic table.
  7. 11. The periodic table is arranged according to increasing __________ #.
  8. 12. _______ atomic mass is an average of the mass #’s of the element’s naturally occurring isotopes.
  9. 14. # of _________ = mass # (or rounded atomic mass)–protons(atomic #)
  10. 19. _______ bonds are formed from the transfer of electrons between metals and nonmetals.