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5 Written questions

5 Multiple choice questions

  1. an attraction between different subtances
  2. bond (attraction) between water molecules
  3. a substance made of joined atoms or 2 or more different elements
  4. a pure substance made of only one kind of atom
  5. group of atoms held together by a covalent bond

4 True/False questions

  1. aqueoscompounds that reduce the concentration of hydrogen ions in a solution

          

  2. hydrogen bondsa weak chemical bond attraction between polar molecules

          

  3. cohesionan attraction between different subtances

          

  4. polar moleculemolecules with an unequal distribuation of electrical charges

          

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