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5 Written questions

5 Matching questions

  1. Ion
  2. Catalyst
  3. Protein
  4. Substrate
  5. Acid
  1. a An element that has gained or lost one or more electrons.
  2. b Substances that reduce the activation energy of a chemical reaction
  3. c Large complex compounds that contain carbon, hydrogen, oxygen, and nitrogen
  4. d Compound that Increases the concentration of hydrogen ions (h+) in solution
  5. e The substance on which an enzyme acts during a chemical reaction.

5 Multiple choice questions

  1. Forms when 2 or more atoms share electrons to form a molecule
  2. The number of protons plus the number of neutrons.
  3. An attraction between different substances (why things get wet)
  4. What dissolves the solute - usually water
  5. Site on an enzyme that attaches to a substrate

5 True/False questions

  1. SolutionSubstance that is dissolved


  2. MoleculeSubstance that is dissolved


  3. Activation EnergyThe energy needed to start a chemical reaction


  4. CompoundThe attraction between substances of the same kind.


  5. Atomic NumberThe number of protons in the nucleus of an element.


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