Question

A change in color when two solutions are mixed together is a clue that a _____ has taken place. physical change change in state temperature change chemical change

Answer 1

Answer: chemical change

Step-by-step explanation:

A physical change is defined as a change in which shape, size of the substance alters. No new substance gets formed in these reactions.

A chemical change is defined as the change in which chemical composition alters. A new substance is formed in these reactions.

Characteristics of chemical reaction:

1. Change in color

2. formation of precipitate

3. Energy is lost or absorbed

4. A gas or bubbles are produced

Thus a change in color when two solutions are mixed together is a clue that a chemical change has taken place.

Answer 2

Chemical change

Step-by-step explanation:

A change in colour indicates that a new substance with different properties (colour) has been formed. This is a chemical change.

A. is wrong. A physical change does not usually cause a change in colour.

B. is wrong. No new gas or solid was formed,

C. is wrong. There is a colour change, not a temperature change.