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5 Written questions

5 Matching questions

  1. atomic weight
  2. trace element
  3. element
  4. polar covalent bond
  5. valence electron
  1. a outer electrons
  2. b mass of an atom
  3. c those required by an organism in only minute quantities
  4. d substance that cannot be broken down to other substances by chemical reactions
  5. e one atom is more electronegative than another

5 Multiple choice questions

  1. two ions of opposite charge
  2. anything that has mass and takes up space
  3. smallest unit of matter that still retains the properties of an element
  4. substance consisting of two or more elements combined in a fixed ratio
  5. bonding capacity, equals number of unpaired electrons in the atom's outermost shell

5 True/False questions

  1. structural formularepresents both atoms and bonding

          

  2. energyability to do work

          

  3. van der Waals interactionouter electrons

          

  4. electronegativitysubstance that cannot be broken down to other substances by chemical reactions

          

  5. potential energyenergy that matter stores because of its position or location