Liquids and Solids

What is the process of a substance changing from a vapor to a solid without passing through the liquid phase?
1. condensation
2. evaporation
3. sublimation
4. deposition
If the volume of a liquid-vapor system decreases, the immediate effect will be a net
1. increase in condensation
2. decrease in evaporation
3. increase in the vapor pressure
4. lack of change
Molecules at the surface of a liquid can enter the vapor phase only if
1. equilibrium has not be reached.
2. the concentration of the vapor is zero
3. their energy is high enough to overcome the attractive forces in the liquid
4. condensation is not occurring.
What type of crystals are like giant molecules?
1. ionic
2. covalent network
3. metallic
4. covalent molecular
Glycerol boils at a slightly higher temperature than does water. This reveals that water's attractive forces are
1. nonexistent
2. weaker than those of glycerol
3. the same as those of glycerol
4. stronger than those of glycerol
A liquid that evaporates quickly is considered
1. volatile
2. to have strong attractive forces
3. ionic
4. one with a low melting point
If the rate of condensation exceeds the rate of evaporation from the surface of a liquid,
1. the system is in equilibrium
2. the liquid is boiling
3. the concentration of the vapor remains unchanged
4. the concentration of the vapor is decreasing
What is the smallest portion of a crystal lattice that reveals the 3-dimensional pattern?
1. unit cell
2. crystal structure
3. coordinate system
4. crystalline symmetry
Which of the following is an NOT an amorphous solid?
1. play dough
2. ice
3. silly putty
4. glass
The difference between crystalline and amorphous solids is determined by
1. temperature changes
2. pressure when the substances are formed
3. the particle arrangement
4. strength of molecular forces
Compared with the particles in a solid, the particles in a liquid usually are
1. higher in energy
2. closer together
3. more massive
4. less fluid
A liquid forms when the average energy of a solid substance's particles
1. increases
2. decreases
3. changes form
4. creates an orderly arrangement
Which term best describes the process by which particles escape from both the surface of a liquid and from within the liquid itself and enter the gas phase?
1. boiling
2. evaporation
3. surface tension
4. aeration
The attractive forces in a solid are
1. too weak to prevent the particles from changing positions
2. strong enough to hold the particles in fixed positions
3. weaker than those of a liquid particles
4. less effective than those in a liquid
What forces hold nonpolar particles together?
1. dipole-dipole
2. London dispersion
3. hydrogen bonding
4. magic
At 100°C, what is the vapor pressure of water?
1. 760mm Hg
2. 100mm Hg
3. cannot be determined
4. 101.3 mm Hg
Which of the following is true about water?
1. It has a relatively high molar heat of vaporization
2. It has a relatively low molar heat of fusion
3. It is less dense as a liquid than as a solid
4. It has a freezing point of 32°C
Once the temperature of a liquid has reached its boiling point, further energy to vaporize it is called its
1. heat of vaporization
2. heat of fusion
3. activation energy
4. triple point
Which of the following phase changes results in an overall increase in randomness of particles over the course of the change?
1. condensation
2. melting
3. freezing
4. deposition
The heat required to freeze a substance is known as the
1. heat of vaporization
2. heat of crystallization
3. heat of fusion
4. heat of condensation
How does the molar heat of fusion of ice compare to the molar heat of fusion for other solids?
1. It's relatively large
2. It's relatively small
3. It's about the same
4. I don't have a clue
When electrons in a covalent bond spend more time around on nucleus of the compound than the other, the molecule is considered
1. polar
2. nonpolar
3. weak
4. ionic
In the phase diagram shown, what phase(s) can water exist at point C?
1. liquid only
2. gas only
3. liquid or gas
4. liquid or solid
The heat of vaporization of water is 40 kJ/mole. If a 27-gram sample of water has been heated to its boiling point, how much additional heat must be added to boil the sample?
1. 60 kJ
2. 20 kJ
3. 40 kJ
4. 80 kJ
How much heat is released when 400 g of steam at 100°C is frozen to minus 10°C?
1. 1,232,400 J
2. 168,000 J
3. 84,920,000 J
4. 8,400 kJ
How much heat is required to boil away 88 g of ice at minus 25°C (no evaporation or sublimation)?
1. 273,000 J
2. 29,920 J
3. 4620 J
4. 36,960 J
How many joules of heat are released when 64 g. of steam at 100°C is condensed, cooled, and then changed to ice at 0°C?
1. 195,840 J
2. 21,760 J
3. 26,880 J
4. 147,200 J
How much heat energy is required to raise 8 g of ice from minus 16°C to 44°C?
1. 4467.2 J
2. 268.8 J
3. 590.7 J
4. 7980 J
How many Joules of energy is absorbed when 47 g of ice melts at STP? (Molar heat of fusion is 40.79 kJ/mol)
1. 106 kJ
2. 961 kJ
3. 4,245,416 kJ
4. 573 kJ
What is the quantity of heat released when 506 g of liquid water freezes (molar heat of crystallization is 6.009 kJ/mol)
1. 169 kJ
2. 961 kJ
3. 506 kJ
4. 473 kJ

Liquids and Solids

Multiple-Choice ExerciseContent © 2006 Melanie Cecere; Authors of Activity: Melanie Cecere & Tami Maloney; All rights reserved. No commercial, for-profit use of this material is allowed. E-mail comments and questions to Tami Maloney.

What is the process of a substance changing from a vapor to a solid without passing through the liquid phase?

If the volume of a liquid-vapor system decreases, the immediate effect will be a net

Molecules at the surface of a liquid can enter the vapor phase only if

What type of crystals are like giant molecules?

Glycerol boils at a slightly higher temperature than does water. This reveals that water's attractive forces are

A liquid that evaporates quickly is considered

If the rate of condensation exceeds the rate of evaporation from the surface of a liquid,

What is the smallest portion of a crystal lattice that reveals the 3-dimensional pattern?

Which of the following is an NOT an amorphous solid?

The difference between crystalline and amorphous solids is determined by

Compared with the particles in a solid, the particles in a liquid usually are

A liquid forms when the average energy of a solid substance's particles

Which term best describes the process by which particles escape from both the surface of a liquid and from within the liquid itself and enter the gas phase?

The attractive forces in a solid are

What forces hold nonpolar particles together?

At 100°C, what is the vapor pressure of water?

Which of the following is true about water?

Once the temperature of a liquid has reached its boiling point, further energy to vaporize it is called its

Which of the following phase changes results in an overall increase in randomness of particles over the course of the change?

The heat required to freeze a substance is known as the

How does the molar heat of fusion of ice compare to the molar heat of fusion for other solids?

When electrons in a covalent bond spend more time around on nucleus of the compound than the other, the molecule is considered

In the phase diagram shown, what phase(s) can water exist at point C?

The heat of vaporization of water is 40 kJ/mole. If a 27-gram sample of water has been heated to its boiling point, how much additional heat must be added to boil the sample?

How much heat is released when 400 g of steam at 100°C is frozen to minus 10°C?

How much heat is required to boil away 88 g of ice at minus 25°C (no evaporation or sublimation)?

How many joules of heat are released when 64 g. of steam at 100°C is condensed, cooled, and then changed to ice at 0°C?

How much heat energy is required to raise 8 g of ice from minus 16°C to 44°C?

How many Joules of energy is absorbed when 47 g of ice melts at STP? (Molar heat of fusion is 40.79 kJ/mol)

What is the quantity of heat released when 506 g of liquid water freezes (molar heat of crystallization is 6.009 kJ/mol)

Multiple-Choice Exercise
Content © 2006 Melanie Cecere; Authors of Activity: Melanie Cecere & Tami Maloney; All rights reserved. No commercial, for-profit use of this material is allowed. E-mail comments and questions to Tami Maloney.