Charles+condlin+and+Grimner

**__Charles’s Law:__** states that the volume of a fixed mass of gas at constant pressure varies directly with the Kelvin temperature. This means that if that if the temperature increases the volume too will increase.
 * __ Charles __**

This is because the higher the temperature of the gas, the higher the speed of the gas molecules. This causes them to collide with the walls of the container more frequently and with more force. In order to keep the pressure constant, the volume of the container must increase. This relationship was discovered by Jacques Charles, a French scientist, in 1787. His discovery came around through his experiments in which he heated a gas and watched the volume of the gas expand.

 Charles’s law is expressed as: ** V=kT or V/T=k** 
 *  V=volume
 *  T=temperature (in Kelvin)
 *  k= is the constant

This law can be applied to volume-temperature problems with the equation:  **V1/T1=V2/T2** <span style="FONT-FAMILY: Tahoma, Geneva, sans-serif"> (V1 and T1 stand for the initial conditions)
 * <span style="FONT-FAMILY: Arial, Helvetica, sans-serif"><span style="FONT-FAMILY: Tahoma, Geneva, sans-serif"> V1= first volume measurement
 * <span style="FONT-FAMILY: Arial, Helvetica, sans-serif"><span style="FONT-FAMILY: Tahoma, Geneva, sans-serif"> T1= first temperature measurement

<span style="FONT-FAMILY: Arial, Helvetica, sans-serif"><span style="FONT-FAMILY: Tahoma, Geneva, sans-serif"> (V2 and T2 symbolize a different set of conditions)
 * <span style="FONT-FAMILY: Arial, Helvetica, sans-serif"><span style="FONT-FAMILY: Tahoma, Geneva, sans-serif"> V2= second volume measurement
 * <span style="FONT-FAMILY: Arial, Helvetica, sans-serif"><span style="FONT-FAMILY: Tahoma, Geneva, sans-serif"> T2= second temperature measurement

*** If the temperature is given in Celsius, remember you __must__ convert it into Kelvin*** (The conversion factor is Celsuis+273=degrees in Kelvin)

This graph shows that if one increases the temperature of a substance then the volume of that substance will increase to, if the pressure remains constant.