21 Which best describes a gas? A. Molecules and atoms are in a fixed position. Their movement is limited to vibration only. B. Molecules and atoms move by sliding over and around other molecules and atoms, but are not moving independently of other molecule or atoms. C. Molecules and atoms move independently in 3-dimensions without contacting other molecules or atoms. D. Molecules and atoms are not moving at all. They are totally motionless. Which phase change happens when a liquid gains heat/energy from the environment 22 to become a gas? A. Deposition B. Sublimation C. Melting D. Vaporization Which phase change happens when a liquid releases heat/energy to the environment 23 to become a solid? A. Freezing B. Evaporation C. Deposition D. Boiling 24 For which phase of matter will the molecules have the most random motion? C. Solids A. Gases B. Liquids D. All have the same random motion 25 What happens to matter when it undergoes a phase change? A. The motion of the molecules will increase or decrease. B. The matter will gain or release energy/heat to or from the environment. C. The contact forces and energy between molecules will form or break. D. All of the above.

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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39 39
TTTTTTTTT
21 Which best describes a gas?
A. Molecules and atoms are in a fixed position. Their movement is limited to
vibration only.
B. Molecules and atoms move by sliding over and around other molecules and
atoms, but are not moving independently of other molecule or atoms.
C. Molecules and atoms move independently in 3-dimensions without contacting
other molecules or atoms.
D. Molecules and atoms are not moving at all. They are totally motionless.
Which phase change happens when a liquid gains heat/energy from the environment
22 to become a gas?
A. Deposition
B. Sublimation
C. Melting
D. Vaporization
Which phase change happens when a liquid releases heat/energy to the environment
23 to become a solid?
A. Freezing
B. Evaporation
C. Deposition
D. Boiling
24 For which phase of matter will the molecules have the most random motion?
C. Solids
A. Gases
B. Liquids
D. All have the same random motion
25 What happens to matter when it undergoes a phase change?
A. The motion of the molecules will increase or decrease.
B. The matter will gain or release energy/heat to or from the environment.
The contact forces and energy between molecules will form or break.
All of the above.
C.
D.
Transcribed Image Text:W M 1 39 39 TTTTTTTTT 21 Which best describes a gas? A. Molecules and atoms are in a fixed position. Their movement is limited to vibration only. B. Molecules and atoms move by sliding over and around other molecules and atoms, but are not moving independently of other molecule or atoms. C. Molecules and atoms move independently in 3-dimensions without contacting other molecules or atoms. D. Molecules and atoms are not moving at all. They are totally motionless. Which phase change happens when a liquid gains heat/energy from the environment 22 to become a gas? A. Deposition B. Sublimation C. Melting D. Vaporization Which phase change happens when a liquid releases heat/energy to the environment 23 to become a solid? A. Freezing B. Evaporation C. Deposition D. Boiling 24 For which phase of matter will the molecules have the most random motion? C. Solids A. Gases B. Liquids D. All have the same random motion 25 What happens to matter when it undergoes a phase change? A. The motion of the molecules will increase or decrease. B. The matter will gain or release energy/heat to or from the environment. The contact forces and energy between molecules will form or break. All of the above. C. D.
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