What are the effects of (1) temperature on the angle of contact (2) impurity on the surface tension ?

What are the effects of (1) temperature on the angle of contact (2) im

1.	What are the effects of (1) temperature on the angle of contact (2) impurity on the surface tension ?
Answer» Solution :ANGLE of contact INCREASES with INCREASE of temperature while SURFACE TENSION generally decreases with increase of temperature.