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5 Written questions

5 Matching questions

  1. molecule
  2. element
  3. anion
  4. isotope
  5. valence
  1. a negatively charged ion
  2. b bonding capacity, equals number of unpaired electrons in the atom's outermost shell
  3. c two or more atoms held together by covalent bonds
  4. d atoms that have more neutrons than other atoms of the same element and therefore weigh more
  5. e substance that cannot be broken down to other substances by chemical reactions

5 Multiple choice questions

  1. starting materials
  2. sharing of a pair of valence electrons by two atoms
  3. mass of an atom
  4. outer electrons
  5. attraction of an atom for the electrons

5 True/False questions

  1. ionic bondtwo ions of opposite charge


  2. atomic numbernumber of protons


  3. double covalent bondsharing two pairs of valence electrons


  4. polar covalent bondtwo atoms are equally electronegative


  5. nonpolar covalent bondone atom is more electronegative than another