Intro to Gases & Kinetic Molecular Theory

Front

What does the Kinetic Molecular Theory state about gas molecules?

Back

Gas molecules influence each other only by collision; they exert no other forces on each other.

Front

What unit is used to measure pressure in gases?

Back

atm (atmosphere)

Front

What unit is used to measure volume in gases?

Back

L (liters)

Front

What causes gas pressure?

Back

Gas pressure is caused by gas molecules colliding with surfaces.

Front

What is the relationship between temperature and the kinetic energy of gas molecules?

Back

As temperature increases, the kinetic energy of gas molecules increases.

Front

Define 'gas' in terms of its physical state.

Back

A gas is a state of matter that has no fixed shape or volume and expands to fill its container.

Front

What happens to gas molecules when they are heated?

Back

They move faster and spread apart, increasing the volume of the gas.

Front

What is the effect of increasing pressure on a gas at constant temperature?

Back

Increasing pressure compresses the gas, reducing its volume.

Front

What is the ideal gas law equation?

Back

PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the gas constant, and T is temperature.

Front

What is meant by 'absolute zero'?

Back

Absolute zero is the theoretical temperature at which gas molecules have minimum kinetic energy, equivalent to 0 Kelvin.