Question

Why does the level of water not change when ice is dissolved in it?

Answer 1

Because as ice floats on water so it displaces the water under it as suggested by Archimedes Principle

So,Ice dissolves on water ice just fills that left space that's the reason water level not change when ice is dissolved in it

Answer 2

Answer:

The water level remains the same when the ice cube melts. A floating object displaces an amount of water equal to its own weight. Since water expands when it freezes, one ounce of frozen water has a larger volume than one ounce of liquid water. ... Let the ice cube melt.