Chemistry: Matter and Change

Chapter 12: States of Matter

Standardized Test Practice

1
The measure of the average kinetic energy of the particles in a sample of matter is _____.
A)temperature
B)speed
C)velocity
D)heat
2
Which of the following gases will diffuse the fastest at room temperature?
A)Ne
B)CO2
C)N2
D)H2
3
In a container filled with one mole of helium and one mole of nitrogen, the pressure in the container is primarily ___________________________.

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A)the pressure exerted by nitrogen
B)the pressure exerted by helium
C)the sum of the pressures exerted by nitrogen and helium
D)zero
4
Relate the changing volume and density of gases. Which of these statements is true?

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A)As volume increases, density increases.
B)As volume increases, density decreases.
C)As volume increases, density remains unchanged.
D)As volume decreases, density decreases.
5
The boiling points of the halogens increase in the order F2 < Cl2 < Br2 < I2 due to an increase in ____________.
A)permanent dipoles
B)hydrogen bonding
C)ionic interactions
D)dispersion forces
6
Which molecule will not undergo hydrogen bonding?
A)HF
B)H2O
C)NH3
D)CH4
7
What type of intermolecular forces are represented by the diagram?

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A)dipole-dipole forces
B)dispersion forces
C)ionic bonding
D)hydrogen bonding
8
Which of the following is the general definition of a solid?
A)Matter that has a fixed volume and a fixed shape.
B)Matter that has a fixed volume but no fixed shape.
C)Matter that has neither a fixed volume nor a fixed shape.
D)Matter that has a fixed shape but no fixed volume.
9
Which of the following is a covalent network solid?

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A)ice
B)table salt
C)table sugar
D)quartz
10
Glycerol is a highly viscous liquid. What sort of bonding between glycerol molecules gives it such high viscosity?

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A)ionic bonding
B)dispersion bonding
C)covalent bonding
D)hydrogen bonding
11
The unit cell of a crystalline solid is ________.

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A)always cubic
B)the building block whose shape determines the shape of the crystal.
C)held together by intramolecular forces.
D)determined by the temperature at which a solid forms.
12
According to the phase diagram for CO2, what is the critical point for carbon dioxide?

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A)-100
B)-78
C)-45
D)31
13
Which of the following phase changes will release energy during the transition?
A)vaporization
B)condensation
C)sublimation
D)melting
14
Why does sweating cool you off?

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A)The temperature of sweat is lower than the temperature of the rest of your body.
B)Water molecules that evaporate from the skin take kinetic energy with them.
C)Liquids are cooler than solids.
D)Water molecules that evaporate from the skin are the slowest molecules.
15
What would be the phase of water at a temperature of 110 degrees Celsius and a pressure of 200 atmospheres?

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A)solid
B)liquid
C)gas
D)the triple point
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