Quiz 10.3 - Properties Of Liquids And Water

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| By Jkrug

Jkrug

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Quizzes Created: 11 | Total Attempts: 2,705

Questions: 10 | Attempts: 292 | Updated: Mar 19, 2023

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Quiz 10.3 - Properties Of Liquids And Water - Quiz

A quiz about the various properties of liquids and water.

Questions and Answers

1.

Which of the following observations best illustrates vapor equilibrium?
- A.
  
  Blood rises up the length of a narrow glass tube.
- B.
  
  Mercury tends to form spherical droplets.
- C.
  
  Moisture is found underneath the lid of a closed food container.
- D.
  
  Frost forms on the windshield of a car on a cold morning.
Correct Answer
C. Moisture is found underneath the lid of a closed food container.

Explanation
Vapor equilibrium refers to the balance between the rate of evaporation and condensation of a substance. In the given options, the observation that best illustrates vapor equilibrium is "Moisture is found underneath the lid of a closed food container." This observation suggests that the moisture inside the container is evaporating and condensing on the lid, indicating a state of equilibrium between the vapor and liquid phases. The other options do not directly relate to vapor equilibrium.

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2.

Which of the following observations best illustrates capillary action?
- A.
  
  Blood rises up the length of a narrow glass tube.
- B.
  
  Mercury tends to form spherical droplets.
- C.
  
  Moisture is found underneath the lid of a closed food container.
- D.
  
  Frost forms on the windshield of a car on a cold morning.
Correct Answer
A. Blood rises up the length of a narrow glass tube.

Explanation
Capillary action occurs when a liquid rises in a narrow tube against the force of gravity. In this case, blood rising up the length of a narrow glass tube demonstrates capillary action because the narrowness of the tube allows for the cohesive and adhesive forces between the blood and the glass to overcome gravity and pull the blood upward.

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3.

Which of the following observations best illustrates surface tension?
- A.
  
  Blood rises up the length of a narrow glass tube.
- B.
  
  Mercury tends to form spherical droplets.
- C.
  
  Moisture is found underneath the lid of a closed food container.
- D.
  
  Frost forms on the windshield of a car on a cold morning.
Correct Answer
B. Mercury tends to form spherical droplets.

Explanation
Surface tension is the force that causes the surface of a liquid to behave like a stretched elastic sheet. It is responsible for certain behaviors such as capillary action and the formation of droplets. The observation that mercury tends to form spherical droplets is the best illustration of surface tension because the cohesive forces between the mercury molecules cause them to minimize their surface area, resulting in a spherical shape. This is a characteristic behavior of liquids with high surface tension.

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4.

Which of the following observations best illustrates hydrogen bonding?
- A.
  
  Blood rises up the length of a narrow glass tube.
- B.
  
  Mercury tends to form spherical droplets.
- C.
  
  Moisture is found underneath the lid of a closed food container.
- D.
  
  Even though water molecules have an extremely low mass, water exists as a liquid.
Correct Answer
D. Even though water molecules have an extremely low mass, water exists as a liquid.

Explanation
Hydrogen bonding is a type of intermolecular force that occurs between a hydrogen atom bonded to a highly electronegative atom (such as oxygen or nitrogen) and another electronegative atom. This type of bonding is responsible for the unique properties of water, including its high boiling point and surface tension. The observation that even though water molecules have a low mass, water exists as a liquid is an example of hydrogen bonding. The hydrogen bonds between water molecules are strong enough to hold them together in a liquid state, despite the low mass of the individual molecules.

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5.

Capillary action occurs in narrow glass tubes because
- A.
  
  Moisture tends to collect underneath the lid of the capillary tube.
- B.
  
  Water has a greater attraction to glass than it has to itself.
- C.
  
  Water has hydrogen, nitrogen, oxygen, and fluorine atoms.
- D.
  
  Water tends to form spherical droplets inside the glass tube.
Correct Answer
B. Water has a greater attraction to glass than it has to itself.

Explanation
Capillary action occurs in narrow glass tubes because water has a greater attraction to glass than it has to itself. This is due to the adhesive forces between the water molecules and the glass surface being stronger than the cohesive forces between the water molecules themselves. As a result, the water molecules climb up the glass tube against gravity, creating the capillary action. The other options mentioned in the question, such as moisture collecting underneath the lid of the capillary tube, the composition of water, or the formation of spherical droplets inside the tube, are not relevant to the phenomenon of capillary action.

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6.

H₃PO₄ exhibits hydrogen bonding.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
H3PO4, also known as phosphoric acid, is capable of exhibiting hydrogen bonding. Hydrogen bonding occurs when a hydrogen atom is bonded to a highly electronegative atom (in this case, oxygen) and forms a weak bond with another electronegative atom (such as oxygen or nitrogen) in a different molecule. In H3PO4, the hydrogen atoms bonded to the oxygen atoms can form hydrogen bonds with other electronegative atoms, leading to the statement that H3PO4 exhibits hydrogen bonding.

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7.

CH₄ exhibits hydrogen bonding.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
CH4, which is methane, does not exhibit hydrogen bonding. Hydrogen bonding occurs when a hydrogen atom is bonded to a highly electronegative atom (such as oxygen, nitrogen, or fluorine) and is attracted to another electronegative atom nearby. In CH4, the hydrogen atoms are bonded to carbon, which is not highly electronegative. Therefore, CH4 does not have the necessary conditions for hydrogen bonding to occur.

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8.

HBr exhibits hydrogen bonding.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
HBr does not exhibit hydrogen bonding because it does not contain a hydrogen atom bonded to a highly electronegative atom such as nitrogen, oxygen, or fluorine. Hydrogen bonding occurs when a hydrogen atom is bonded to one of these highly electronegative atoms, creating a strong dipole-dipole interaction between molecules. In the case of HBr, the hydrogen atom is bonded to a less electronegative atom (bromine), so hydrogen bonding does not occur.

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9.

HF exhibits hydrogen bonding.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
Hydrogen bonding is a type of intermolecular force that occurs when a hydrogen atom is bonded to a highly electronegative atom (such as oxygen, nitrogen, or fluorine) and is attracted to another electronegative atom in a different molecule. In the case of HF (hydrogen fluoride), the hydrogen atom is bonded to a highly electronegative fluorine atom, and it can form hydrogen bonds with other electronegative atoms. Therefore, the statement that "HF exhibits hydrogen bonding" is true.

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10.

Surface tension can be defined as the tendency of a liquid to
- A.
  
  Rise up a narrow glass tube.
- B.
  
  Evaporate and condense at the same rate.
- C.
  
  Change directly from a solid to a gas.
- D.
  
  Maintain a spherical shape.
Correct Answer
D. Maintain a spherical shape.

Explanation
Surface tension is the property of a liquid that allows it to minimize its surface area and form a spherical shape. This is due to the cohesive forces between the liquid molecules, which pull them together and create a "skin" or surface layer. This surface tension is what allows insects to walk on water, for example, as the cohesive forces hold the water molecules together and create a strong surface. Therefore, the correct answer is maintain a spherical shape.

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Current Version
Mar 19, 2023

Quiz Edited by
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Apr 18, 2019

Quiz Created by
Jkrug

Quiz 10.3 - Properties Of Liquids And Water

Which of the following observations best illustrates vapor equilibrium?

Which of the following observations best illustrates capillary action?

Which of the following observations best illustrates surface tension?

Which of the following observations best illustrates hydrogen bonding?

Capillary action occurs in narrow glass tubes because

H3PO4 exhibits hydrogen bonding.

CH4 exhibits hydrogen bonding.

HBr exhibits hydrogen bonding.

HF exhibits hydrogen bonding.

Surface tension can be defined as the tendency of a liquid to

H₃PO₄ exhibits hydrogen bonding.

CH₄ exhibits hydrogen bonding.