Chemistry Chapters 13 and 14 (Practice Quiz)

What happens to the temperature of a gas when it is compressed?

The temperature increases.

As the temperature of the gas in a balloon decreases, what occurs?

The average kinetic energy of the gas decreases.

If 4 moles of gas are added to a container with 1 mole of gas, how does the pressure change?

The pressure will be five times higher.

The volume of a gas is doubled while the temperature is held constant. How does the gas pressure change?

It is reduced by one half.

If a balloon is heated while pressure is constant, what happens to its volume?

It increases.

When the pressure and number of particles of a gas are constant, what else is constant?

The product of the volume and temperature in kelvins.

If a sealed syringe is heated, what happens to the syringe plunger?

It moves out.

The combined gas law relates which factors?

Temperature, pressure, and volume.

What does the ideal gas law allow a scientist to calculate that other gas laws do not?

Number of moles.

Under what conditions of temperature and pressure is the behavior of real gases most like that of ideal gases?

High temperature and high pressure.

As the temperature of a fixed volume of gas increases, what happens to the pressure?

The pressure will increase.

If oxygen is removed from air as iron rusts, what happens to the partial pressure of oxygen?

It decreases.

At low temperatures and pressures, how does the volume of a real gas compare to that of an ideal gas?

It is greater.

In general, for a gas at constant volume, how is pressure related to temperature?

The pressure of the gas is directly proportional to its temperature in kelvins.

Which of the following gases will effuse the most rapidly?

Hydrogen.

What is one standard atmosphere of pressure in kilopascals?

101.3 kPa.

The temperature at which the motion of particles theoretically ceases is what?

0 K.

Compared to the melting points of ionic compounds, the melting points of molecular solids tend to be what?

Lower.

Most solids are characterized by what property?

Are dense and difficult to compress.