When Jenny puts a stick of butter in the microwave, the butter melts. Which of the following is/are true about the change that occurs when the butter melts?

Question

I. It is a physical change.
II. It makes a new substance.
III. It is a chemical change.

A.
II and III only
B.
II only
C.
I only
D.
I and II only

Answer 1

The correct answer is C. I only.

When butter melts, it undergoes a physical change. The butter changes from a solid to a liquid due to the heat, but it does not create a new substance; it remains butter (just in a different state). Therefore:

• I. It is a physical change. - True
• II. It makes a new substance. - False
• III. It is a chemical change. - False

Thus, only statement I is true.