How does the particle model explain the effects of heating?Gas pressure

The particle model describes the arrangement of particles in solids, liquids and gases; it can be used to predict changes when matter is heated.

Part ofCombined ScienceMatter - Models and explanations

Gas pressure

If the of a container with a gas inside stays the same, the pressure of a gas increases as its increases.

As a result, the gas particles will be travelling faster and will collide with the walls of the container more frequently, and with more .

This means that there is a between and temperature. If a pressure gauge is connected to a flask of air and the flask is heated, a graph of pressure against temperature can be produced.

Graph of pressure against temperature. The line starts at 0 degrees C and three units of pressure, rising steadily to six units of pressure at 100 degrees C.