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5 Written questions

5 Matching questions

  1. Enzyme
  2. Active Site
  3. Nucleic Acid
  4. Compound
  5. Protein
  1. a A substance made of the joined atoms of two or more different elements.
  2. b Site on an enzyme that attaches to a substrate
  3. c A long chain of smaller molecules called nucleotides
  4. d Substances that increase the speed of chemical reactions ( usually a protein, Lowers activation energy )
  5. e Large complex compounds that contain carbon, hydrogen, oxygen, and nitrogen

5 Multiple choice questions

  1. The energy needed to start a chemical reaction
  2. Nonpolar molecules that are not solube in water ( can dissolve )
  3. The attraction between substances of the same kind.
  4. A mixture in which one or more substances is evenly distributed in another substance
  5. The smallest unit of matter that can not be broken down by chemical means.

5 True/False questions

  1. SoluteSubstance that is dissolved


  2. CatalystSubstances that reduce the activation energy of a chemical reaction


  3. CarbohydrateOrganic compounds made of carbon, hydrogen, and oxygen atoms.


  4. BaseCompound that Reduces the concentration of hydrogen ions (increases (OH-))


  5. MoleculeA group of atoms held together by convalent bonds


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