Q. What is the term for the change of state from liquid to gas?
-
A.
Condensation
-
B.
Evaporation
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C.
Sublimation
-
D.
Freezing
Solution
Evaporation is the process of changing from liquid to gas.
Correct Answer: B — Evaporation
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Q. What is the term for the change of state from solid to gas?
-
A.
Sublimation
-
B.
Deposition
-
C.
Evaporation
-
D.
Condensation
Solution
Sublimation is the process where a solid changes directly into a gas.
Correct Answer: A — Sublimation
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Q. What is the term for the energy required to increase the surface area of a liquid?
-
A.
Viscosity
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B.
Surface tension
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C.
Cohesion
-
D.
Adhesion
Solution
Surface tension is the energy required to increase the surface area of a liquid.
Correct Answer: B — Surface tension
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Q. What is the term for the pressure exerted by a vapor in equilibrium with its liquid?
-
A.
Saturation pressure
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B.
Vapor pressure
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C.
Boiling point
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D.
Critical pressure
Solution
Vapor pressure is the pressure exerted by a vapor in equilibrium with its liquid.
Correct Answer: B — Vapor pressure
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Q. What is the term for the process by which a liquid changes into a gas?
-
A.
Condensation
-
B.
Evaporation
-
C.
Sublimation
-
D.
Deposition
Solution
Evaporation is the process by which a liquid changes into a gas.
Correct Answer: B — Evaporation
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Q. What is the term for the process by which a liquid changes to a gas?
-
A.
Condensation
-
B.
Evaporation
-
C.
Sublimation
-
D.
Deposition
Solution
Evaporation is the process by which a liquid changes to a gas.
Correct Answer: B — Evaporation
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Q. What is the term for the process by which a liquid turns into vapor?
-
A.
Condensation
-
B.
Evaporation
-
C.
Sublimation
-
D.
Deposition
Solution
Evaporation is the process by which a liquid turns into vapor.
Correct Answer: B — Evaporation
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Q. What is the term for the process of a liquid turning into vapor?
-
A.
Condensation
-
B.
Evaporation
-
C.
Sublimation
-
D.
Deposition
Solution
Evaporation is the process by which a liquid turns into vapor.
Correct Answer: B — Evaporation
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Q. What is the term for the resistance of a liquid to flow?
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A.
Viscosity
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B.
Surface tension
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C.
Density
-
D.
Capillarity
Solution
Viscosity is the measure of a liquid's resistance to flow.
Correct Answer: A — Viscosity
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Q. What is the term for the temperature at which a liquid turns into vapor?
-
A.
Melting point
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B.
Boiling point
-
C.
Freezing point
-
D.
Sublimation point
Solution
The boiling point is the temperature at which a liquid turns into vapor.
Correct Answer: B — Boiling point
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Q. What is the term for the temperature at which a liquid's vapor pressure equals the external pressure?
-
A.
Melting point
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B.
Freezing point
-
C.
Boiling point
-
D.
Critical point
Solution
The boiling point is defined as the temperature at which a liquid's vapor pressure equals the external pressure.
Correct Answer: C — Boiling point
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Q. What is the term for the temperature at which a solid becomes a liquid?
-
A.
Boiling point
-
B.
Melting point
-
C.
Freezing point
-
D.
Sublimation point
Solution
The melting point is the temperature at which a solid becomes a liquid.
Correct Answer: B — Melting point
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Q. What is the term for the transition from a gas to a liquid?
-
A.
Sublimation
-
B.
Condensation
-
C.
Evaporation
-
D.
Freezing
Solution
The transition from a gas to a liquid is called condensation.
Correct Answer: B — Condensation
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Q. What is the term for the transition from a solid directly to a gas?
-
A.
Melting
-
B.
Sublimation
-
C.
Condensation
-
D.
Evaporation
Solution
Sublimation is the process where a solid transitions directly to a gas without becoming a liquid.
Correct Answer: B — Sublimation
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Q. What is the term for the transition from liquid to gas at temperatures below the boiling point?
-
A.
Evaporation
-
B.
Condensation
-
C.
Sublimation
-
D.
Freezing
Solution
Evaporation is the process of a liquid turning into gas below its boiling point.
Correct Answer: A — Evaporation
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Q. What is the term for the transition from liquid to gas?
-
A.
Condensation
-
B.
Evaporation
-
C.
Sublimation
-
D.
Freezing
Solution
Evaporation is the process where liquid turns into gas.
Correct Answer: B — Evaporation
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Q. What is the term for the transition from solid to gas without passing through the liquid state?
-
A.
Sublimation
-
B.
Deposition
-
C.
Evaporation
-
D.
Condensation
Solution
Sublimation is the process where a solid turns directly into a gas.
Correct Answer: A — Sublimation
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Q. What is the value of the universal gas constant R in L·atm/(K·mol)?
-
A.
0.0821
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B.
8.314
-
C.
62.36
-
D.
1.987
Solution
The universal gas constant R is 0.0821 L·atm/(K·mol).
Correct Answer: A — 0.0821
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Q. What phenomenon occurs when a liquid rises in a narrow tube against gravity?
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A.
Viscosity
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B.
Surface tension
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C.
Capillarity
-
D.
Hydrostatic pressure
Solution
Capillarity is the phenomenon where liquid rises in a narrow tube due to surface tension.
Correct Answer: C — Capillarity
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Q. Which gas has the highest density at the same temperature and pressure?
Solution
CO2 has the highest density among the given gases at the same temperature and pressure.
Correct Answer: D — CO2
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Q. Which gas has the highest rate of diffusion at a given temperature?
Solution
Helium (He) has the highest rate of diffusion due to its low molar mass.
Correct Answer: C — He
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Q. Which gas law relates pressure and temperature at constant volume?
-
A.
Boyle's Law
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B.
Charles's Law
-
C.
Avogadro's Law
-
D.
Gay-Lussac's Law
Solution
Gay-Lussac's Law relates pressure and temperature at constant volume.
Correct Answer: D — Gay-Lussac's Law
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Q. Which gas law relates the volume and temperature of a gas at constant pressure?
-
A.
Boyle's Law
-
B.
Charles's Law
-
C.
Avogadro's Law
-
D.
Graham's Law
Solution
Charles's Law states that the volume of a gas is directly proportional to its temperature at constant pressure.
Correct Answer: B — Charles's Law
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Q. Which gas law relates volume and temperature at constant pressure?
-
A.
Boyle's Law
-
B.
Charles's Law
-
C.
Avogadro's Law
-
D.
Ideal Gas Law
Solution
Charles's Law states that the volume of a gas is directly proportional to its temperature at constant pressure.
Correct Answer: B — Charles's Law
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Q. Which of the following best describes plasma?
-
A.
A solid with high density
-
B.
A gas with low density
-
C.
An ionized gas
-
D.
A liquid at high temperature
Solution
Plasma is an ionized gas consisting of free electrons and ions, typically found at high temperatures.
Correct Answer: C — An ionized gas
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Q. Which of the following best describes the arrangement of particles in a gas?
-
A.
Tightly packed in a fixed position
-
B.
Close together but can move past each other
-
C.
Far apart and moving freely
-
D.
Randomly arranged in a fixed structure
Solution
Gas particles are far apart and move freely, allowing them to fill the container.
Correct Answer: C — Far apart and moving freely
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Q. Which of the following best describes the arrangement of particles in a solid?
-
A.
Random and far apart
-
B.
Close together and fixed in place
-
C.
Close together but free to move
-
D.
Random and close together
Solution
In solids, particles are closely packed and fixed in place, giving them a definite shape.
Correct Answer: B — Close together and fixed in place
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Q. Which of the following equations represents the ideal gas law?
-
A.
PV = nRT
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B.
PV = nR
-
C.
PV = RT
-
D.
P = nRT/V
Solution
The ideal gas law is represented by the equation PV = nRT.
Correct Answer: A — PV = nRT
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Q. Which of the following factors does NOT affect the pressure of a gas?
-
A.
Volume
-
B.
Temperature
-
C.
Number of moles
-
D.
Color of the gas
Solution
The color of the gas does not affect its pressure; pressure is affected by volume, temperature, and number of moles.
Correct Answer: D — Color of the gas
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Q. Which of the following factors does NOT affect the rate of diffusion of a gas?
-
A.
Molar mass
-
B.
Temperature
-
C.
Pressure
-
D.
Volume of the container
Solution
The volume of the container does not affect the rate of diffusion of a gas; it is primarily affected by molar mass, temperature, and pressure.
Correct Answer: D — Volume of the container
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