Question

scenes a - d represent atomic - scale views of different samples of substances. part 1 of 4. under one set of conditions, the substances in a and b mix and the result is depicted in c. does this represent a chemical change, a physical change, or both? check all that apply. physical change. chemical change. none of the above.

Explanation:

Step1: Define physical and chemical change

A physical change involves a change in physical form without changing the chemical identity of substances. A chemical change results in the formation of new substances with different chemical properties.

Step2: Analyze the given scenes

In scenes A and B, we have two different substances. When they mix to form C, there is no indication of new - substance formation. The atoms or molecules just intermingle. There are no new chemical bonds formed or broken.

Answer:

Physical change