Jacob has a bucket of ice. He covers the bucket with a lid and sets it in the sun. The ice melts into liquid water. How does the mass of the ice compare with the mass of the water?
Provided there are no holes in the bucket and it is well sealed, the mass of the ice will be exactly the same as the mass of the liquid water. The state of matter does not affect the mass of matter, it only affects how the matter is organized.
