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Chapter 2 AP Biology Test

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5 Written Questions

5 Matching Questions

  1. chemical equillibrium
  2. molecule
  3. isotope
  4. element
  5. ion
  1. a charged atom
  2. b two or more atoms held together by covalent bonds
  3. c point at which reactions offset one another exactly, no effect on concentrations of reactants and products
  4. d substance that cannot be broken down to other substances by chemical reactions
  5. e atoms that have more neutrons than other atoms of the same element and therefore weigh more

5 Multiple Choice Questions

  1. starting materials
  2. sharing of a pair of valence electrons by two atoms
  3. one in which the nucleus decays spontaneously, giving off particles and energy
  4. one atom is more electronegative than another
  5. sum of protons plus neutrons in nucleus

5 True/False Questions

  1. electronegativitysubstance that cannot be broken down to other substances by chemical reactions

          

  2. cationnegatively charged ion

          

  3. valence electronoutermost electron shell

          

  4. mattersmallest unit of matter that still retains the properties of an element

          

  5. double covalent bondsharing two pairs of valence electrons

          

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