Chapter 2 Page 3 Study Tool

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