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 statement is true. When Jenny shapes the sand into a sand castle, she is merely changing the shape of the sand without altering its chemical composition. This is characteristic of a physical change.

• II. It makes a new substance. This statement is false. While the sand is shaped into a castle, the composition of the sand remains the same; no new substance is formed.

• III. It is a chemical change. This statement is false. A chemical change involves a change in the chemical composition of the substance, which is not the case here.

Thus, only statement I is true.