What process cause an increase in volume?
Why should the trapped air be removed from the tips of the burets before starting with the titration process?
On an atomic scale, atoms are constantly vibrating. This vibration along with the electronic orbitals of the atom limit the minimum distance between two atoms. With increase in temperature the amplitude of this vibration increases. This leads to an increase in the minimum distance. This increase in the minimum distance manifests itself as an increase in the volume at a macroscopic scale.
length: ruler volume: i dont know the name of this process. put it into a container with certain amount of water and measure the increase of water level. the volume is the base area of the container multiplies the increase of water level temperature: thermometer mass: balance (most preferably an electronic one)