Is ice heavier or lighter than liquid water?

I have 8 ounces of water in a plastic bowl (liquid measure). It weighs (for the sake of argument) ½ lb.

I put the water and the bowl in the freezer – it turns to ice.

Is the combined weight the same? (the liquid measure amount is the same, of course).

Does changing the physical form change the weight? (if I turned that same 8 oz. of water into water vapor, what would that weigh?)