Gas laws

http://www.shodor.org/unchem/advanced/gas/index.html

An equation that chemists call the Ideal Gas Law, shown below, relates the volume, temperature, and pressure of a gas.

http://intro.chem.okstate.edu/1314F00/Laboratory/GLP.htm
Try to change the volume, pressure, and temperature and see the results

http://intro.chem.okstate.edu/1314F00/Laboratory/GLP.htm

The ideal gas law can be viewed as arising from the kinetic pressure of gas molecules colliding with the walls of a container

http://chemed.chem.purdue.edu/genchem/topicreview/bp/ch4/gaslaws3.html

Gas law problems often ask you to predict what happens when one or more changes are made in the variables that describe the gas