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5 Written questions

5 Matching questions

  1. electron
  2. acid
  3. solvent
  4. suspension
  5. mixture
  1. a solution with a higher concentration of hydrogen ions than water
  2. b two or more elements or compounds that are physically mixed but not chemically combined
  3. c negatively charged particle circulating around the nucleus
  4. d the substance in which the solute is dissolved
  5. e mixtures of water and nondissolved materials

5 Multiple choice questions

  1. a weak acid or weak base that prevents sudden changes in pH
  2. smallest unit of a compound
  3. basic unit of matter
  4. the substance that is dissolved
  5. mixture where all components are even distributed

5 True/False questions

  1. elementthe substance in which the solute is dissolved


  2. nucleuscenter of the atom containing protons and neutrons


  3. cohesionan attraction between molecules of different substances


  4. covalent bondFormed when one or more electrons are transferred from one atom to another


  5. pH scalesmallest unit of a compound