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5 Written questions

5 Matching questions

  1. Compound
  2. Enzyme
  3. Surface Tension
  4. Ionic Bond
  5. Active Site
  1. a Site on an enzyme that attaches to a substrate
  2. b Substances that increase the speed of chemical reactions ( usually a protein, Lowers activation energy )
  3. c Caused by the attraction between water molecules; prevents the surface of water from easily breaking.
  4. d A substance made of the joined atoms of two or more different elements.
  5. e Bonds formed when atoms transfer electrons

5 Multiple choice questions

  1. The energy needed to start a chemical reaction
  2. An attraction between different substances (why things get wet)
  3. What dissolves the solute - usually water
  4. The substance on which an enzyme acts during a chemical reaction.
  5. The number of protons in the nucleus of an element.

5 True/False questions

  1. ElementSubstances made up of only one kind of atom

          

  2. Nucleic AcidBonds formed when atoms transfer electrons

          

  3. ProteinAn element that has gained or lost one or more electrons.

          

  4. LipidNonpolar molecules that are not solube in water ( can dissolve )

          

  5. SoluteA mixture in which one or more substances is evenly distributed in another substance

          

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