Jenny goes to the beach and uses sand to make a sand castle. Which of the following is/are true about the change in the shape of the sand?

Question

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

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

Answer 1

The correct answer is B. I only.

Here's the reasoning:

• I. It is a physical change. This is true. Making a sand castle involves rearranging the sand particles without changing its chemical composition. Hence, it is a physical change.

• II. It makes a new substance. This is false. The sand's chemical structure remains the same; it's just shaped differently.

• III. It is a chemical change. This is also false for the same reason as II—there is no new substance created.

Therefore, the only true statement is I.