Matter can go through a phase change and still have the same mass.

True

Explanation:

In a physical change such as melting, can change its form but the total mass will remain the same. For example, in a chemical reaction, the total mass of substances that react will equal the mass of the products. However, it is important to mention that some phase changes such as from solid to liquid, the mass of an ice will be turned to the liquid what and during this phase change period, the mass of the ice consequently decreases.

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.