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5 Written questions

5 Matching questions

  1. solute
  2. isotope
  3. atom
  4. solvent
  5. proton
  1. a basic unit of matter
  2. b the substance in which the solute is dissolved
  3. c the substance that is dissolved
  4. d atoms of the same element but with a different number of neutron
  5. e positively charged particle of an atom

5 Multiple choice questions

  1. solution witha lower concentration of hydrogen ions than water
  2. substance formed by the chemical comination of two or more compounds in definite proportion
  3. two or more elements or compounds that are physically mixed but not chemically combined
  4. center of the atom containing protons and neutrons
  5. an attraction between molecules of the same substance

5 True/False questions

  1. ionic bondforms when electrons are shared between atoms


  2. ionpositively or negatively charged atom


  3. elementpure substance consisting entirely of one type of atom


  4. moleculesmallest unit of a compound


  5. pH scalesmallest unit of a compound


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