A student adds red food coloring to water and observed the dye spreading out to fill the container. This student claimed that the experiment resulted in a color change, and therefore, showed a chemical change or reaction. The student’s claim is incorrect. Which of the following statements would correctly refute this student’s claim?.
A.
There is no reason to refute the student’s statement. Color changes always indicate a chemical reaction.
B. Color change alone does not indicate a chemical reaction. Another indicator of chemical reaction must accompany the color change.
C. Since color is not a property of matter, a change in color provides no information about the changes occurring in matter.
D. While color change is an indicator of chemical reaction, it does not always indicate chemical change. Adding red dye to water does not change the composition of the water; it only changes the appearance of the water
Answers: 2
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