Gas Laws Test

Front

What is Boyle's Law?

Back

Boyle's Law states that the pressure of a gas is inversely proportional to its volume when the temperature is held constant. Formula: P1V1 = P2V2.

Front

What is Charles' Law?

Back

Charles' Law states that the volume of a gas is directly proportional to its temperature (in Kelvin) when the pressure is held constant. Formula: V1/T1 = V2/T2.

Front

What is Avogadro's Law?

Back

Avogadro's Law states that equal volumes of gases, at the same temperature and pressure, contain an equal number of molecules. Formula: V1/n1 = V2/n2.

Front

What is the Combined Gas Law?

Back

The Combined Gas Law combines Boyle's, Charles', and Avogadro's laws. It states that (P1V1)/T1 = (P2V2)/T2.

Front

What is the unit of pressure represented by mmHg?

Back

mmHg (millimeters of mercury) is a unit of pressure defined as the pressure exerted by a column of mercury 1 millimeter high.

Front

What is the unit of pressure represented by atm?

Back

atm (atmosphere) is a unit of pressure defined as being precisely equal to 101,325 Pa (Pascals).

Front

What is the unit of pressure represented by psi?

Back

psi (pounds per square inch) is a unit of pressure used in the imperial system, commonly used in the United States.

Front

What happens to the volume of a gas when temperature decreases at constant pressure?

Back

The volume of a gas decreases when the temperature decreases at constant pressure, according to Charles' Law.

Front

What is the ideal gas law?

Back

The ideal gas law relates pressure, volume, temperature, and number of moles of a gas. Formula: PV = nRT, where R is the ideal gas constant.

Front

How do you calculate pressure using the ideal gas law?

Back

To calculate pressure using the ideal gas law, rearrange the formula: P = nRT/V.