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Introduction to Entropy Check-In

Authored by Matthew Owen

Chemistry

11th - 12th Grade

Used 4+ times

Introduction to Entropy Check-In
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9 questions

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1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

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

Media Image

Predict the entropy change, ΔS.

ΔS = +
ΔS = -
ΔS = 0
ΔS = no change

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Predict the entropy change, ΔS.

ΔS = +
ΔS = -
ΔS = 0
ΔS = no change

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

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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