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5 Written questions

5 Matching questions

  1. Active Site
  2. Compound
  3. Solvent
  4. Solute
  5. Ion
  1. a What dissolves the solute - usually water
  2. b An element that has gained or lost one or more electrons.
  3. c Substance that is dissolved
  4. d A substance made of the joined atoms of two or more different elements.
  5. e Site on an enzyme that attaches to a substrate

5 Multiple choice questions

  1. A mixture in which one or more substances is evenly distributed in another substance
  2. Large complex compounds that contain carbon, hydrogen, oxygen, and nitrogen
  3. Compound that Reduces the concentration of hydrogen ions (increases (OH-))
  4. Compound that Increases the concentration of hydrogen ions (h+) in solution
  5. The number of protons plus the number of neutrons.

5 True/False questions

  1. CohesionThe attraction between substances of the same kind.


  2. AdhesionThe attraction between substances of the same kind.


  3. Surface TensionCaused by the attraction between water molecules; prevents the surface of water from easily breaking.


  4. Activation EnergyThe energy needed to start a chemical reaction


  5. ElementSubstances made up of only one kind of atom


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