I conducted an experiment today to test the capillarity of water at various temperentures. My results showed that as the temperature increased, the height of the water up the small narrow tube decreased.
I will have an in class test on friday which will require me to explain the chemistry behind why it happened.
Can someone explain why the level lowered in terms of bonding etc?
My loose hypothesis is that the water level decreased because the adhesive forces acting between the water and the glass tube was weakened as the water heated up, but why did the forces weaken?
Thanks