The combined gas law combines the three gas laws: Boyle's Law, Charles' Law, and Gay-Lussac's Law. It states that the ratio of the product of pressure and volume and the absolute temperature of a gas is equal to a constant. When Avogadro's law is added to the combined gas law, the ideal gas law results.
The Chemistry of Matches
College chemistry is a comprehensive overview of general chemistry topics, plus usually a little organic chemistry and biochemistry. This is an index of college chemistry topics which you can use to help study college chemistry or to get an idea of what to expect if you're thinking about taking college chem.