CLEAPSS Supporting practical science and technology
PP031 - Investigating gas laws 2 – pressure/temperature law (Gay-Lussac’s Law)
Students have to learn about the gas laws, how properties such as pressure, volume, temperature, and amount of a gas change with respect to each other. 

With commonly-accessible bits of kit, it is possible to investigate the pressure-temperature relationship, also known as Gay-Lussac’s law, which states that pressure is proportional to temperature (at a fixed volume and mass).