A physical change can sometimes result in a color change. Which of the following situations shows this?

Question

A
Milk turns yellow when it spoils.

B
Dough becomes darker when it is baked into cake.

C
A red candy dissolves and turns water pink.

D
A match turns black when it is burned.

Answer 1

In the context of physical changes producing color changes, the best example from the options provided is:

C. A red candy dissolves and turns water pink.

In this case, the red candy is physically dissolving in the water, which results in a color change (water turning pink) but does not involve a chemical change.

Here's a brief explanation for why the other options are not examples of physical changes:

• A. Milk turns yellow when it spoils. (This indicates a chemical change due to spoilage.)
• B. Dough becomes darker when it is baked into cake. (This is typically due to a Maillard reaction, which is a chemical change.)
• D. A match turns black when it is burned. (This indicates combustion, a chemical change.)

Therefore, option C is the most appropriate choice.