Chapter 15.2, Problem 12R

To determine

Whether the law of conservation of mass applies to physical change or not. The significance of law of conservation of mass for melting ice and the distillation of water.

Explanation of Solution

Introduction:

As per law of conservation of mass, the mass can neither formed nor be destructed during any physical change.

Matter is defined as substance that occupies space and has certain mass.

The law of conservation of mass applies to physical change.

When ice melts, the ice changes its state from solid to liquid. The total mass of the ice is equal to the total mass of water.

During the distillation of water, water changes its state from liquid to gas. The total mass of the liquid water is equal to the total mass of steam.

Conclusion:

Hence, the law of conservation of mass applies to physical change.