Slide 1 of 21 © Copyright Pearson Prentice Hall Properties of Gases > 14.1 Compressibility ____________________ is a measure of how much the _____________ of matter ____________ under _____________. When a person collides with an inflated airbag, the compression of the gas absorbs the energy of the impact.

Slide 2 of 21 © Copyright Pearson Prentice Hall Properties of Gases > 14.1 Compressibility Gases are easily compressed because of the ______________ between the particles in a gas. The distance between particles in a gas is much __________ than the distance between particles in a liquid or solid. Under pressure, the particles in a gas are forced _____________ together.

Slide 3 of 21 © Copyright Pearson Prentice Hall Properties of Gases > 14.1 Compressibility At room temperature, the distance between particles in an enclosed gas is about 10 times the diameter of a particle.

© Copyright Pearson Prentice Hall Properties of Gases > Slide 4 of Factors Affecting Gas Pressure What are the three factors that affect gas pressure? The _____________ of gas, _____________ of the container and ______________ are factors that affect gas pressure.

Slide 5 of 21 © Copyright Pearson Prentice Hall Properties of Gases > 14.1 Factors Affecting Gas Pressure Four variables are generally used to describe a gas. The variables and their common units are _________ (P) in kilopascals _________ (V) in liters ____________ (T) in kelvins the number of ____________ (n).

Slide 6 of 21 © Copyright Pearson Prentice Hall Properties of Gases > 14.1 Factors Affecting Gas Pressure Amount of Gas You can use kinetic theory to predict and explain how gases will respond to a change of conditions. If you inflate an air raft, for example, the pressure inside the raft will increase.

Slide 7 of 21 © Copyright Pearson Prentice Hall Properties of Gases > 14.1 Factors Affecting Gas Pressure ______________ of particles with the inside walls of the raft result in the _____________ that is exerted by the enclosed gas. ______________ the __________ of particles increases the number of __________, which is why the gas pressure increases.

© Copyright Pearson Prentice Hall Slide 8 of 21 Properties of Gases > 14.1 Factors Affecting Gas Pressure If the gas pressure increases until it exceeds the strength of an enclosed, rigid container, the container will burst.

Slide 9 of 21 © Copyright Pearson Prentice Hall Properties of Gases > 14.1 Factors Affecting Gas Pressure Volume You can ___________ the pressure exerted by a contained gas by ____________ its volume. The more a gas is compressed, the greater is the pressure that the gas exerts inside the container.

© Copyright Pearson Prentice Hall Slide 10 of 21 Properties of Gases > 14.1 Factors Affecting Gas Pressure When the volume of the container is halved, the pressure the gas exerts is doubled.

Slide 11 of 21 © Copyright Pearson Prentice Hall Properties of Gases > 14.1 Factors Affecting Gas Pressure Temperature An ______________ in the temperature of an enclosed gas causes an ______________ in its pressure. As a gas is heated, the average kinetic energy of the particles in the gas increases. Faster-moving particles strike the walls of their container with more energy.

© Copyright Pearson Prentice Hall Slide 12 of 21 Properties of Gases > 14.1 Factors Affecting Gas Pressure When the Kelvin _________________ of the enclosed gas ______________, the __________ of the enclosed gas ____________.