Entropy
25 minutes ago
bethmineo
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15 QuestionsShow answers
  • Question 1
    60 seconds
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    Q. Entropy increases from solid, liquid to gas. Why?
    answer choices
    Molecular disorder increases
    Molecular randomness decreases
    Molecules are more energetic
    Molecules are more reactive
  • Question 2
    60 seconds
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    Q.

    Which represents a decrease in entropy?

    answer choices

    sublimation of CO2

    boiling water

    condensation of steam on cold glass

    NaCl dissolving in water

  • Question 3
    60 seconds
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    Q.

    The entropy will usually increase when

    answer choices

    a molecule is broken into two or more smaller molecules

    a reaction occurs that results in an increase in the number of moles of gas

    a solid changes to a liquid

    all of these

  • Question 4
    60 seconds
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    Q.

    Systems in nature tend to undergo changes toward

    answer choices

    lower energy and less disorder

    lower energy and more disorder

    higher energy and less disorder

    higher energy and more disorder

  • Question 5
    60 seconds
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    Q.

    Which sample has the lowest entropy?

    HINT - Look at the phase of each chemical....

    answer choices

    1 mole of KNO3(l)

    1 mole of KNO3(s)

    1 mole of H2O(l)

    1 mole of H2O(g)

  • Question 6
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    Q. Which phase of matter has the greatest motion and least orderly arrangement?
    answer choices
    solid
    liquid
    gas
  • Question 7
    60 seconds
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    Q.

    Which phase change represents a decrease in entropy?

    answer choices

    solid to liquid

    gas to liquid

    liquid to gas

    solid to gas

  • Question 8
    60 seconds
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    Q. Entropy always increases when
    answer choices
    enthalpy decreases.
    temperature decreases.
    temperature increases.
    volume increases.
  • Question 9
    60 seconds
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    Q.

    Entropy is a measure of

    answer choices

    accuracy

    precision

    the disorder of a system

    the attraction of a nucleus for an electron

  • Question 10
    60 seconds
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    Q.

    Given the change of phase:

    CO2(g) —> CO2(s)

    As CO2(g) changes to CO2(s), the entropy of the system

    answer choices

    decreases

    increases

    remains the same

  • Question 11
    60 seconds
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    Q.

    What phase of matter has the most entropy?

    answer choices

    solid

    liquid

    gas

  • Question 12
    60 seconds
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    Q.

    Entropy of a system increases when a reaction increases the number of particles.

    answer choices

    True

    False

  • Question 13
    60 seconds
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    Q.

    Which represents a decrease in entropy?

    answer choices

    sublimation of CO2

    boiling water

    condensation of steam on cold glass

    NaCl dissolving in water

  • Question 14
    60 seconds
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    Q.

    What is a spontaneous process ?

    answer choices

    slow process

    fast process

    process that needs an external intervention to occur

    process that does not need external intervention to occur / keep happening

  • Question 15
    60 seconds
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    Q. Entropy is a measure of:
    answer choices
    order
    disorder
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