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5 Written questions

5 Matching questions

  1. adhesion
  2. buffer
  3. acid
  4. pH scale
  5. isotope
  1. a measures the concentration of hydrogen ions in a solution
  2. b solution with a higher concentration of hydrogen ions than water
  3. c atoms of the same element but with a different number of neutron
  4. d a weak acid or weak base that prevents sudden changes in pH
  5. e an attraction between molecules of different substances

5 Multiple choice questions

  1. Formed when one or more electrons are transferred from one atom to another
  2. an attraction between molecules of the same substance
  3. neutral particle of an atom
  4. the substance in which the solute is dissolved
  5. solution witha lower concentration of hydrogen ions than water

5 True/False questions

  1. compoundsubstance formed by the chemical comination of two or more compounds in definite proportion

          

  2. electronnegatively charged particle circulating around the nucleus

          

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

          

  4. van der waals forceforce of attraction between large molecules

          

  5. moleculethe substance that is dissolved