CHM 1040: Final 1/4

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  1. Chemistry is relevant to which of the following areas of study?


    A) Atmospheric studies
    B) Nuclear studies
    C) Environmental studies
    D) Biological studies
    E) All of the above
    D) Biological studies
    (this multiple choice question has been scrambled)
  2. 2.



    ______ is an example of a derived unit - a unit built up from standard units.

    A) Temperature in fahrenheit
    B) Volume in m3
    C) Time in seconds
    D) Mass in kg
    E) Length in feet
    B) Volume in m3
    (this multiple choice question has been scrambled)
  3. Which is not an example of chemistry at work?

    A) Bread rises in a warm oven.
    B) Arms inspectors use "sniffers" to find dangerous weapons.
    C) A rock breaks a mirror
    D) Your body converts food into energy.
    E) A battery powers your alarm clock.
    C) A rock breaks a mirror

    This involves a physical, not a chemical change.
    (this multiple choice question has been scrambled)
  4. Among other things, chemists have learned ______.

    A) literature.
    B) languages.
    C) biology.
    D) critical thinking.
    E) to memorize only facts
    • D) critical thinking.
    • Critical thinking is critical.
  5. A quantitative observation:

    A) is a general description.
    B) does not depend upon numbers.
    C) describes something exactly.
    D) is a measurement.
    D) is a measurement.

    Measurements require numbers.
    (this multiple choice question has been scrambled)
  6. By definition, a mixture has variable

    A) composition
    B) elements.
    C) mass.
    D) color.
    E) phases.
    A) composition
    (this multiple choice question has been scrambled)
  7. Why is a gas much more compressible than a solid?

    A) Solids break apart easily.
    B) Gases may flow freely.
    C) Gases have indefinite shape.
    D) Solids are rigid.
    E) Gases are mostly empty space.
    E) Gases are mostly empty space.
    (this multiple choice question has been scrambled)
  8. Gases have a definite shape.

    A) True
    B) False
    B) False

    A gas will fill any container completely, no matter what its shape.
  9. An approximation:

    A) is sometimes used to simplify science.
    B) is an exact relationship.
    C) creates error.
    D) is never used in "real" science.
    A) is sometimes used to simplify science.
    (this multiple choice question has been scrambled)
  10. Air is

    A) a pure substance.
    B) devoid of water.
    C) the atmosphere.
    D) a homogeneous mixture.
    E) a solid.
    D) a homogeneous mixture.

    Air is a homogenous mixture in one phase (gaseous).
    (this multiple choice question has been scrambled)
  11. A set of hypotheses is called a(n)

    A) rule
    B) experiment
    C) a model or theory
    D) natural law
    C) a model or theory
    (this multiple choice question has been scrambled)
  12. Heating 512 g of iron from 500ºC to 533ºC requires _______ of heat. The specific heat of iron is 0.45 J/ºC g.

    A) 7.6 J
    B) 7600 J
    C) 119000 J
    D) 6.98 J
    E) 37500 J
    B) 7600 J
    (this multiple choice question has been scrambled)
  13. An absolute temperature scale

    A) is always positive.
    B) is always known.
    C) is never attainable.
    D) can be expressed in any unit.
    E) may be no larger than 10000.
    A) is always positive.
    (this multiple choice question has been scrambled)
  14. Arrange the density of a generic substance according to state.

    A) gas ? liquid < solid
    B) gas > liquid ? solid
    C) liquid > solid > gas
    D) gas > liquid > solid
    E) solid ? liquid > gas
    E) solid ? liquid > gas
    (this multiple choice question has been scrambled)
  15. Which of the following statements is qualitative?

    A) That pizza cost only $10.00.
    B) I ate four slices of pizza last night.
    C) That pizza smells good!
    D) I had to work all night at the pizza parlor.
    C) That pizza smells good!
    (this multiple choice question has been scrambled)
  16. A certain substance contains three different elements. It could be

    A) An atom.
    B) a compound.
    C) Pure water.
    B) a compound.

    A compound contains two or more elements.
    (this multiple choice question has been scrambled)
  17. Doing chemistry successfully requires

    A) extensive experience.
    B) the right genes.
    C) luck.
    D) practice solving problems.
    D) practice solving problems.

    Practice familiarizes you with procedures.
    (this multiple choice question has been scrambled)
  18. A(n) _______ gives one possible explanation for an observation.

    A) hypothesis
    B) theory
    C) natural law
    D) discussion
    E) experiment
    A) hypothesis
    (this multiple choice question has been scrambled)
  19. A homogeneous mixture is

    A) the same throughout.
    B) granular.
    C) always a liquid.
    D) restricted to a single phase.
    E) a compound.
    A) the same throughout.

    A homogeneous mixture will be the same throughout at some level.
    (this multiple choice question has been scrambled)
  20. A _______ may not be modified over time.

    A) natural law
    B) hypothesis
    C) chemical equation
    D) theory
    A) natural law

    A natural law is an important conclusion, and is considered to be permanent
    (this multiple choice question has been scrambled)
  21. Round the number 14.449 to three significant digits.

    A) 14.4
    B) 14.400
    C) 15.0
    D) 14.5
    E) 14.0
    A) 14.4
    (this multiple choice question has been scrambled)
  22. The amount of energy required by a process depends upon

    A) the temperature change.
    B) none of these.
    C) the types of substances involved.
    D) all of these.
    E) the amount of substance.
    D) all of these.

    The energy required depends upon all these things.
    (this multiple choice question has been scrambled)
  23. The scientific method:

    A) depends upon memorization.
    B) cannot predict.
    C) is repetative and tedious
    D) is a methodical way to do chemistry.
    E) can prove a theory is true.
    D) is a methodical way to do chemistry.
    (this multiple choice question has been scrambled)
  24. Which of the following is a quantitative observation?

    A) Water boils at 100 degrees Fahrenheit.
    B) The solution has a white solid at the bottom of the beaker.
    C) Solid CO2 turns directly into a gas.
    D) Water vapor is odorless.
    E) The solution is blue.
    A) Water boils at 100 degrees Fahrenheit.
    (this multiple choice question has been scrambled)
  25. Distillation requires

    A) a flame.
    B) water.
    C) a mixture.
    D) alcohol.
    E) expensive tools.
    C) a mixture.
    (this multiple choice question has been scrambled)
  26. Chemistry is a(n) _______ science.

    A) trivial
    B) experimental
    C) difficult
    D) performing
    E) biological
    B) experimental
    (this multiple choice question has been scrambled)
  27. Determine the number of significant figures in the number 0.0250015.

    A) 7
    B) 6
    C) 2
    D) 8
    E) 4
    D) 8
    (this multiple choice question has been scrambled)
  28. Which of the following is not a hypothesis?

    A) Lead causes learning disabilities in children.
    B) My friend's terrier dug a hole in my yard last night.
    C) High-tension lines are dangerous to long-term health.
    D) Driving a car is faster than walking.
    E) Thorough studying will raise your grades.
    D) Driving a car is faster than walking.
    (this multiple choice question has been scrambled)
  29. A scientific test is called a(n)

    A) natural law
    B) experiment
    C) discussion
    D) theory
    E) hypothesis
    B) experiment
    (this multiple choice question has been scrambled)
  30. How many cubes, each of volume 1mL, will be needed to fill up a 15L container?

    A) 1500
    B) 150
    C) 15000
    D) 1000
    E) 100
    C) 15000
    (this multiple choice question has been scrambled)
  31. Physical methods

    A) will separate only homogeneous mixtures.
    B) are ways to cause chemical reactions.
    C) will separate only heterogeneous mixtures.
    D) allow separation of mixtures.
    D) allow separation of mixtures.
    (this multiple choice question has been scrambled)
  32. When magnesium metal burns,

    A) it undergoes a physical change.
    B) it undergoes a reduction.
    C) it is a chemical change.
    D) it is reversible.
    E) it produces a small amount of heat
    C) it is a chemical change.
    (this multiple choice question has been scrambled)
  33. Filtration will separate

    A) a homogeneous mixture.B) substances in an alloy.
    C) a gas from a liquid.
    D) a solid from a liquid.Feedback: Right!
    E) water from an aqueous solution.
    D) a solid from a liquid.

    The filter will hold back the solid.
  34. It takes the same amount of energy to heat 100 g of water from
    50ºC to 100ºC as it takes to heat 100 g of water from 500ºC to 550ºC.

    A) True
    B) False
    A) True

    The amount of energy required doesn't depend upon the beginning or ending temperature of the water.
  35. An alloy is not a mixture.

    A) True
    B) False
    B) False

    An alloy is a homogeneous mixture of metals.
  36. Debate in science:

    A) eventually cause theories to fail.
    B) should not occur if the science is done properly.
    C) provide a way to air and modify theory.
    D) distracts from real work.
    C) provide a way to air and modify theory.

    Debate is a natural part of the scientific method.
    (this multiple choice question has been scrambled)
  37. The standard (SI) unit of length is the _______.

    A) inch
    B) yard
    C) centimeter
    D) meter
    E) foot
    D) meter
    (this multiple choice question has been scrambled)
  38. Sand and oil would form

    A) a miscible liquid.
    B) a messy solution.
    C) an alloy.
    D) a heterogeneous mixture.
    E) a homogeneous mixture.
    D) a heterogeneous mixture.

    Heterogeneous means (at least) two phases.
    (this multiple choice question has been scrambled)
  39. How many gallons of water is 1750 mL? 1 gal = 4 qt; 32 oz = 1 qt; 29.6 mL = 1 oz.

    A) 4.73 gal
    B) 2.16 gal
    C) 473 gal
    D) 5 gal
    E) 0.46 gal
    E) 0.46 gal
    (this multiple choice question has been scrambled)
  40. Uncertainty is measurement is:

    A) unavoidable and expected.
    B) unnecessary.
    C) as large as the measurement itself.
    D) a sign of a poorly-executed experiment.
    A) unavoidable and expected.
    (this multiple choice question has been scrambled)
  41. The prefix "d" means

    A) 0.001
    B) 10
    C) 100
    D) 1000
    E) 0.1
    E) 0.1
    (this multiple choice question has been scrambled)
  42. The SI unit of energy is defined as:

    A) the calorie.
    B) work.
    C) the joule.
    D) the kilocalorie.
    E) It is not defined.
    C) the joule.
    (this multiple choice question has been scrambled)
  43. A substance that cannot be broken down into another substance is called

    A) a dimer.
    B) divisible.
    C) an ion.
    D) a compound.
    E) an element.
    E) an element.
    (this multiple choice question has been scrambled)
  44. Which of the following is a chemical property of copper?

    A) Copper conducts heat well.
    B) Copper is used in coins.
    C) Copper turns green when exposed to air.
    D) Copper is a solid at room temperature.
    E) Copper is a soft metal.
    C) Copper turns green when exposed to air.
    (this multiple choice question has been scrambled)
  45. Which of the following is not representative of a physical property?

    A) Water freezes at 0ºC and 1 atm pressure.
    B) Water boils at 100ºC and 1 atm pressure.
    C) The density of water is 1 g/mL.
    D) Water reacts with sodium metal.
    E) Water and oil do not mix.
    D) Water reacts with sodium metal.
    (this multiple choice question has been scrambled)
  46. A qualitative observation:

    A) is a measurement.
    B) is a general description.
    C) describes exact amounts.
    D) depends upon color.
    B) is a general description.
    (this multiple choice question has been scrambled)
  47. A physical change

    A) could be an explosion.
    B) involves a change in the fundamental composition.
    C) could be a phase change.
    D) is also called a reaction.
    E) could be combustion.
    C) could be a phase change.
    (this multiple choice question has been scrambled)
  48. Experiments are performed to

    A) prove a theory
    B) create new natural laws
    C) offer support to a theory
    D) make observations
    C) offer support to a theory
    (this multiple choice question has been scrambled)
  49. Given a specific number of significant figures, how many uncertain digits exist in a measurement?

    A) two
    B) In this case, the number of uncertain digits depends upon the situation.
    C) 0
    D) all of them
    E) 1
    E) 1
    (this multiple choice question has been scrambled)
  50. Convert -151ºC to fahrenheit.

    A) -304ºF
    B) 0ºF
    C) 304ºF
    D) -240ºF
    E) 272ºF
    D) -240ºF
    (this multiple choice question has been scrambled)
  51. With regards to significant figures, the main difference between zeroes and non-zero numbers is:

    A) there is no difference.
    B) non-zero numbers are sometimes significant, and zeroes are always significant.
    C) zeroes are never significant.
    D) zeroes are sometimes significant, and non-zero numbers are always significant.
    D) zeroes are sometimes significant, and non-zero numbers are always significant.
    (this multiple choice question has been scrambled)
  52. Determine the density of a new material if 2.81 grams displace a 0.56 mL volume of water.

    A) 25.2 g/cm3
    B) 0.20 g/mL
    C) 14.10 g/mL
    D) 5.02 g/cm3
    D) 5.02 g/cm3
    (this multiple choice question has been scrambled)
  53. What volume of mercury will weigh the same as 150 mL of water?
    The density of water is 1.0 g/mL, and the density of mercury is 13.6
    g/mL.

    A) 11.0 mL
    B) 0.09 mL
    C) 110 mL
    D) 150 mL
    E) 2040 mL
    A) 11.0 mL
    (this multiple choice question has been scrambled)
  54. Learning chemistry has been compared to learning a foreign language.

    A) True
    B) False
    A) True

    It is certainly a symbolic language such as algebra.
  55. Scientific models:

    A) need to be very complex.
    B) are always correct.
    C) are useful tools in science.
    D) never involve approximations.
    C) are useful tools in science.
    (this multiple choice question has been scrambled)
Author:
kieu
ID:
81834
Card Set:
CHM 1040: Final 1/4
Updated:
2011-04-26 03:07:52
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CHM 1040: Final 1/4
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