Question

1. what are some examples of phase changes, or changes in state, you have observed before?

Explanation:

Phase changes involve a substance changing from one state (solid, liquid, gas) to another. Melting (solid to liquid, like ice to water), boiling (liquid to gas, like water to steam), and freezing (liquid to solid, like water to ice) are common examples. These are observable in daily life.

Answer:

Melting (e.g., ice turning to water), boiling (e.g., water turning to steam), freezing (e.g., water turning to ice).