Question

theresa creates an experiment where she mixes two red - colored substances together in a container and observes the solution slowly changing from red to blue for the next eight minutes. the solution becomes completely blue after eight minutes. what does this represent about the type of change happening in the container? a chemical change started immediately and finished at eight minutes. a non - chemical change started immediately and finished at eight minutes. a chemical change occurred at four minutes. a non - chemical change occurred at four minutes.

Explanation:

A chemical change results in a new substance being formed, often indicated by a color - change. Here, mixing two substances leads to a color change from red to blue over time, which is a sign of a chemical reaction that starts when the substances are mixed and finishes when the color change is complete (after eight minutes).

Answer:

A. A chemical change started immediately and finished at eight minutes.