CHM 1040: Final Review

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  1. Chemical equations..

    (A) show how to write chemical equations
    (B) give directions for naming chemical compounds
    (C) describe chemical reactions
    (D) describe only biological changes
    (C) describe chemical reactions
    (this multiple choice question has been scrambled)
  2. The complete combustion of which of the following substances produces carbon dioxide and water?

    (A) Ca(HCO3)2
    (B) NO
    (C) K2CO3
    (D) C4H10
    (D) C4H10
    (this multiple choice question has been scrambled)
  3. Which of the following is evidence for a chemical reaction?

    (A) a gas is detected
    (B) a precipitate is formed
    (C) a color change is observed
    (D) light is produced
    (E) all of the above
    (E) all of the above
  4. Classify the following reaction:
    (NH4)2Cr2O7-> NH3 + H2O + Cr2O3

    (A) double replacement
    (B) single-replacement
    (C) decomposition
    (D) combination
    (C) decomposition
    (this multiple choice question has been scrambled)
  5. Spectator ions are..

    (A) none of these are correct
    (B) ions formed by an element from group IA
    (C) a, b, & c are all correct
    (D) the ions that will be represented on the left side of an equation as hydrated ions, while on the right side of the equation, will be represented as part of the compound that formed a precipitate
    (E) the ions that do not undergo any change during a reaction
    (E) the ions that do not undergo any change during a reaction
    (this multiple choice question has been scrambled)
  6. In a chemical reaction an atom of sulfur gains 2 electrons to become

    (A) a cation
    (B) none of these
    (C) all of these
    (D) an anion
    (E) oxidized
    (D) an anion
    (this multiple choice question has been scrambled)
  7. Which of the following is NOT correct regarding the reactants of a chemical reaction?

    (A) The mass of the products is usually a little than the mass of the reactants.
    (B) They are written on the left side
    (C) A plus sign (+) is used to separate one from another
    (D) They are the substances that interact with one another.
    (A) The mass of the products is usually a little than the mass of the reactants.
    (this multiple choice question has been scrambled)
  8. Compounds containing only 2 chemical elements are called

    (A) none of these
    (B) binary compounds
    (C) heterogeneous substances
    (D) ternary compounds
    (E) mixtures
    (B) binary compounds
    (this multiple choice question has been scrambled)
  9. Because atoms are so ______, the standard units of mass are not useful in measurements.

    (A) unstable
    (B) small
    (C) scattered
    (D) varied
    (E) electrically charged
    (B) small
    (this multiple choice question has been scrambled)
  10. Choose the false statements.

    (A) 6.022 x 1023 hydrogen atoms weigh 1.008 g.
    (B) 1 mol of carbon atoms weighs 12.0 g.
    (C) 1 mol = 6.022 x 1023 amu
    (D) Oxygen is a diatomic gas
    (E) 6.022 x 1023 atoms = 1 mol atoms
    (C) 1 mol = 6.022 x 1023 amu
    (this multiple choice question has been scrambled)
  11. The empirical formula for acetic acid is CH2O. Its molar mass is 60g/mol. The molecular formula is

    (A) C2H6O
    (B) CH2O
    (C) C2H4O2
    (D) C2HO2
    (E) none of the above
    (C) C2H4O2
    (this multiple choice question has been scrambled)
  12. The oxygen-to-hydrogen mass ratio of water is always 8.0 is an example of what fundamental law?

    (A) Law of Constant Whole Number Ratio
    (B) Law of Conservation of Mass
    (C) Law of Constant Mass Ratio
    (D) Law of Constant Composition
    (E) none of the above
    (D) Law of Constant Composition
    (this multiple choice question has been scrambled)
  13. Which of the following is a molecular compound?

    (A) barium sulfide
    (B) calcium
    (C) potassium hydroxide
    (D) nitrogen monoxide
    (E) none of the above
    (D) nitrogen monoxide
    (this multiple choice question has been scrambled)
  14. What metric prefix is used to designate 1/1000?

    (A) nano
    (B) milli
    (C) mega
    (D) kilo
    (E) micro
    (B) milli
    (this multiple choice question has been scrambled)
  15. Cesium melts at 302 K and boils at 944 K. Whatr is the physical state of cesium at 25 degree celsius?

    (A) colloid
    (B) gas
    (C) liquid
    (D) plasma
    (E) solid
    (E) solid
    (this multiple choice question has been scrambled)
Author:
kieu
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82480
Card Set:
CHM 1040: Final Review
Updated:
2011-04-28 19:52:20
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CHM Final Review
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CHM 1040: Final Review
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