REVIEW U2: Particles in Motion

Front

In order to solve gas law calculations, temperature must be measured in ____ when solving the problems.

Back

Kelvins

Front

Pressure is caused by ______.

Back

Gas molecules colliding with surfaces of the container.

Front

If the pressure exerted by a gas at 25°C in a volume of 0.044 L is 3.81 atm, how many moles of gas are present?

Back

.0069 mol

Front

What is STP for gases?

Back

273 K, 1 atm

Front

Which of the following is a measure of average kinetic energy?

Back

Temperature

Front

What is the ideal gas law equation?

Back

PV = nRT

Front

Define absolute zero.

Back

The theoretical temperature at which a substance has minimal thermal energy, equivalent to 0 K.

Front

What does the term 'kinetic molecular theory' refer to?

Back

A theory that explains the behavior of gases in terms of particles in motion.

Front

What is the relationship between temperature and kinetic energy in gases?

Back

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

Front

What is the significance of the gas constant (R) in the ideal gas law?

Back

R is a proportionality constant that relates pressure, volume, temperature, and number of moles.