How ionic product of water change with temperature ?

Define Ionic product of water. What is the effect of temprature on it?

How does the conductance of a semiconducting material change with rise in temperature?

How does surface tension change with temperature?

How does conductivity of a semi conductor change with the rise in temperature ?

Do molality and mole fraction changes with temperature ?

A block of wood is floating on water at 0^@ C to 8^@C .How does the volume,v change with use in temperature?