Solids, Liquids and Gases

State the rule of pressure and temperature for a fixed mass of gas at constant volume.

A gas has a pressure of 105 kPa at 350 K. What will be its pressure at 420 K, if the volume remains constant?

Describe what happens to the volume of a gas if its pressure is doubled at constant temperature.

Explain, using the idea of molecules, why the pressure of a gas increases if it is heated at constant volume.

A student pumps air into a sealed cylinder. The initial pressure is 90 kPa and the volume is 150 cm³.

Write the equation that connects the initial and final pressure and temperature of a fixed mass of gas at constant volume.

A sample of gas is in a cylinder at a pressure of atm and a volume of dm. The gas is compressed to a volume of dm at constant temperature.

Calculate the new pressure of the gas.

Explain, with reference to particle motion, why increasing the temperature of a gas at constant volume increases the gas pressure.

A fixed mass of gas has pressure Pa at K. The temperature is raised to K and the volume remains constant.

Calculate the new pressure of the gas.

A student investigates Boyle's law using a sealed syringe, as shown.

The initial pressure is kPa and the initial volume is cm. By pushing the plunger, the volume is changed to cm while temperature remains constant.