Element No of Qualities Senses
Sky 1 Sound
Air 2 Sound and Touch
Electricity 3 Sound, Touch and Form
Water 3 Sound, Touch, Form and Taste
Although they are different mixtures of different materials, such mixtures do not take place automatically, just as a mixture of colors does not take place automatically without the touch of the living painter.
reference: Srimad Bhagavadam SB 3.5.36