Buoyancy and Archimedes Principle

Question

When a block of ice is placed in alcohol, it sinks to the bottom. If the ice were to melt, would the fluid level increase, decrease, or remain the same?

Answer 1

Unlike many other liquids, water expands when it freezes, but contracts when it melts. Therefore, when the ice melts inside the alcohol, the volume of the liquid water is lower than the volume of the ice. The total volume of the water and alcohol mixture will be lower. The fluid level decreases in this case.