Introduction to Entropy Check-In
Authored by Matthew Owen
Chemistry
11th - 12th Grade
Used 4+ times
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9 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Entropy increases from solid, liquid to gas. Why?
Molecular disorder increases
Molecular randomness decreases
Molecules are more energetic
Molecules are more reactive
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Predict the entropy change, ΔS.
ΔS = +
ΔS = -
ΔS = 0
ΔS = no change
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Predict the entropy change, ΔS.
ΔS = +
ΔS = -
ΔS = 0
ΔS = no change
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Predict the entropy change, ΔS.
ΔS = +
ΔS = -
ΔS = 0
ΔS = little change
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
As NaCl dissolves according to the equation
NaCl(s) → Na+(aq) + Cl-(aq), the entropy of the system
Increases
Decreases
Remains the same
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which one of these would result in a decrease in entropy?
A solid solute dissolves in water.
A gas is released.
A liquid freezes.
A liquid boils.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Solid magnesium dissolves in an aqueous solution of hydrochloric acid, releasing hydrogen gas and heat from a solution of magnesium chloride. What is the sign on ΔS for this reaction?
Negative because it is becoming more ordered.
Negative because it is becoming more disordered.
Positive because it is becoming more ordered.
Positive because it is becoming more disordered.
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