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5 Written questions

5 Matching questions

  1. isotope
  2. atom
  3. covalent bond
  4. suspension
  5. pH scale
  1. a atoms of the same element but with a different number of neutron
  2. b basic unit of matter
  3. c forms when electrons are shared between atoms
  4. d measures the concentration of hydrogen ions in a solution
  5. e mixtures of water and nondissolved materials

5 Multiple choice questions

  1. substance formed by the chemical comination of two or more compounds in definite proportion
  2. force of attraction between large molecules
  3. solution witha lower concentration of hydrogen ions than water
  4. an attraction between molecules of the same substance
  5. a weak acid or weak base that prevents sudden changes in pH

5 True/False questions

  1. elementpure substance consisting entirely of one type of atom

          

  2. solutionthe substance that is dissolved

          

  3. protonpositively charged particle of an atom

          

  4. adhesionan attraction between molecules of the same substance

          

  5. nucleusa weak acid or weak base that prevents sudden changes in pH

          

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