Question

Does a little of hot water weigh more than a little of cold water

Answer 1

NO, a little of hot water weighs LESS than a little of cold water.

This is because hot water has density lesser than same volume of cold water.

As mass= volume*density, mass is directly related to density... hence hot water will weigh less.

Answer 2

Answer:Hot water is lighter than the same volume of cold water, not heavier. The reason for the decrease in density as the temperature increases is that the water molecules cannot get so close together at higher temperatures. The molecules have more kinetic energy and take up more space as they move around in the liquid.