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5 Written questions

5 Matching questions

  1. compound
  2. solute
  3. buffer
  4. atom
  5. base
  1. a a weak acid or weak base that prevents sudden changes in pH
  2. b basic unit of matter
  3. c solution witha lower concentration of hydrogen ions than water
  4. d substance formed by the chemical comination of two or more compounds in definite proportion
  5. e the substance that is dissolved

5 Multiple choice questions

  1. two or more elements or compounds that are physically mixed but not chemically combined
  2. mixture where all components are even distributed
  3. neutral particle of an atom
  4. atoms of the same element but with a different number of neutron
  5. center of the atom containing protons and neutrons

5 True/False questions

  1. pH scalemeasures the concentration of hydrogen ions in a solution

          

  2. van der waals forcemeasures the concentration of hydrogen ions in a solution

          

  3. elementthe substance in which the solute is dissolved

          

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

          

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