Chapter 2 Page 2 Study tool

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Across
  1. 7. must have 8 electrons in valence shell to be stable except H and He
  2. 9. outermost shell
  3. 10. positively charged and made by losing an electron
  4. 13. substances that ionize in water and form solutions that can conduct electricity
  5. 14. chemical particle composed of two or more atoms united by a chemical covalent bond
  6. 15. A vitamin that is an antioxidant
  7. 17. negatively charged and made by gaining an electron
  8. 18. dangerous because they destroy healthy molecules by changing them into them
  9. 19. charged particles with unequal numbers of protons and electrons
  10. 20. C6H12O6- glucose- covalent bonds Molecule or Compound?
Down
  1. 1. Two or more different atoms joined by an ionic or covalent bond
  2. 2. example of an antioxidant
  3. 3. identifies types and numbers of each element present (ingredients)
  4. 4. molecules with the exact same molecular formula BUT atoms are in a different arrangement
  5. 5. chemical particles with an odd number of electrons
  6. 6. 17 protons and 16 electrons
  7. 8. O2- oxygen gas- covalent bond Molecule or Compound?
  8. 11. neutralize free radicals
  9. 12. 16 protons and 17 electrons
  10. 16. Atoms with unequal numbers of protons and electrons