What does a phase diagram illustrate about a substance?

Phase Diagrams and States of Matter

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Physics
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9th - 10th Grade
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Hard

Patricia Brown
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The chemical composition of a substance
The physical state of a substance as temperature and pressure change
The color changes of a substance
The atomic structure of a substance
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a phase diagram, what do the lines separating regions represent?
The equilibrium conditions between two phases
The temperature of the substance
The chemical reactions occurring
The pressure of the substance
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do particles behave in the solid phase compared to the liquid phase?
Particles in a solid are more restricted in movement than in a liquid
Particles in a liquid are fixed and do not move
Particles in a solid are fixed and do not move
Particles in a liquid are more tightly packed than in a solid
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a key difference between the liquid and gas phases at the molecular level?
Particles in a liquid are fixed in place
Particles in a gas are closer together than in a liquid
Particles in a liquid are far apart except when they collide
Particles in a gas are far apart except when they collide
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What occurs at the solid-liquid equilibrium line on a phase diagram?
Sublimation occurs
Melting and freezing occur at the same rate
Only freezing occurs
Only melting occurs
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
At the liquid-gas equilibrium line, what processes occur at the same rate?
Melting and freezing
Vaporizing and condensing
Subliming and depositing
Boiling and freezing
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the density of a gas as it approaches the critical point?
The density increases
The density fluctuates
The density remains constant
The density decreases
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