Chemistry Final Exam

80 Questions | Total Attempts: 106

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Chemistry Quizzes & Trivia

Chemistry Final 2011-2012


Questions and Answers
  • 1. 
    • A. 

      Chromium tetrachloride

    • B. 

      Chromium trichloride

    • C. 

      Chromium(I) chloride

    • D. 

      Chromium(III) chloride

  • 2. 
    If two oxygen atoms combine to make a molecule, what type of bond will they form?
    • A. 

      An ionic bond

    • B. 

      A hydrogen bond

    • C. 

      A double covalent bond

    • D. 

      A metallic bond

  • 3. 
    A gas under a pressure of 74 mmHg and at a temperature of 75C occupies a 500.0 L container.  How many moles of gas are in the container?
    • A. 

      1.7 moles

    • B. 

      7.9 moles

    • C. 

      13 moles

    • D. 

      59 moles

  • 4. 
    How many protons and electrons are in a ion?
    • A. 

      27 protons, 29 electrons

    • B. 

      27 protons, 31 electrons

    • C. 

      29 protons, 27 electrons

    • D. 

      29 protons, 31 electrons

  • 5. 
    How does an   ion differ from an electrically neutral sulfur atom?
    • A. 

      Mass number

    • B. 

      Atomic number

    • C. 

      Nuclear charge

    • D. 

      Number of electrons

  • 6. 
    A chemistry student is given 5 samples of a metal.  The student measures and records the mass and the volume of each sample and then graphs the data, as shown in Figure 1 on the Supplemental Information.  What is the identity of the metal?
    • A. 

      Aluminum

    • B. 

      Nickel

    • C. 

      Iron

    • D. 

      Lead

  • 7. 
    Based on its position in the periodic table, the element sulfur would be expected to have how many valence electrons?
    • A. 

      4

    • B. 

      6

    • C. 

      8

    • D. 

      16

  • 8. 
    The number of molecules in 48.0 g of oxygen gas () is
    • A. 
    • B. 
    • C. 
    • D. 
  • 9. 
    What are the coefficients of the correctly balanced equation?
    • A. 

      1, 3, 2, 3

    • B. 

      0, 2, 2, 3

    • C. 

      1, 2, 2, 2

    • D. 

      2, 6, 4, 3

  • 10. 
    The correct formula for dinitrogen pentoxide is
    • A. 
    • B. 
    • C. 
    • D. 
  • 11. 
    Covalent bonds mainly occur between
    • A. 

      Two nonmetallic elements

    • B. 

      Two metallic elements

    • C. 

      One metallic element and one nonmetallic element

    • D. 

      One metalloid and one metallic element

  • 12. 
    When 1 g of sodium chloride (NaCl) is placed in 100 g of water, a solution results.  Once the solution is prepared, water is now considered what part of the solution?
    • A. 

      Solid

    • B. 

      Liquid

    • C. 

      Solute

    • D. 

      Solvent

  • 13. 
    What is the empirical formula of the compound with the molecular formula ?
    • A. 
    • B. 
    • C. 
    • D. 
  • 14. 
    The reaction for the decomposition of ammonia () can be written as shown below.  If a student starts with 21.7 g of , how many grams of hydrogen gas will be produced by the reaction?
    • A. 

      1.28 g

    • B. 

      2.55 g

    • C. 

      3.85 g

    • D. 

      32.5 g

  • 15. 
    According to the pH scale in Figure 2 of the Supplemental Information, which substance is slightly acidic?
    • A. 

      Battery acid

    • B. 

      Black coffee

    • C. 

      Baking soda

    • D. 

      Drain cleaner

  • 16. 
    • A. 

      0.439 L

    • B. 

      22.8 L

    • C. 

      67.2 L

    • D. 

      91.9 L

  • 17. 
    In Figure 3 on Supplemental Information, which orbital notation represents an s-block element in the third period?
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

  • 18. 
    What is the volume of 2.00 moles of nitrogen gas at STP?
    • A. 

      11.2 L

    • B. 

      28.0 L

    • C. 

      44.8 L

    • D. 

      56.0 L

  • 19. 
    According to this balanced equation, what volume of is required to form 40.0 L of
    • A. 

      20.0 L

    • B. 

      44.8 L

    • C. 

      80.0 L

    • D. 

      100 L

  • 20. 
    What do the have in common?
    • A. 

      They have the same number of protons.

    • B. 

      They will form covalent bonds with oxygen.

    • C. 

      They have the same electron configuration as argon.

    • D. 

      They are larger than the corresponding atoms.

  • 21. 
    What region on the graph (Figure #4) represents the liquid phase?
    • A. 

      I

    • B. 

      II

    • C. 

      III

    • D. 

      IV

  • 22. 
    When undergoes radioactive decay, the result is two products, one of which is calcium-42.  What is the other product?
    • A. 
    • B. 
    • C. 
    • D. 
  • 23. 
    The graph in figure 5 is a potential energy diagram for a chemical reaction.  Which energy measure will remain UNCHANGED with the addition of a catalyst?
    • A. 

      II

    • B. 

      IV

    • C. 

      V

    • D. 

      VI

  • 24. 
    What type of chemical reaction is represented by this balanced equation?
    • A. 

      Synthesis

    • B. 

      Decomposition

    • C. 

      Single replacement

    • D. 

      Double replacement

  • 25. 
    Which chemical equation is balanced?
    • A. 
    • B. 
    • C. 
    • D.