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

Answer 1

The correct answer is D. I only.

Here's the reasoning:

I. It is a physical change. - True. Shaping the sand into a sand castle does not change the chemical composition of the sand; it only changes its physical form.

II. It makes a new substance. - False. The sand is still sand, and no new substance is created by simply changing its shape.

III. It is a chemical change. - False. A chemical change involves a change in the chemical composition of the substance, which does not occur when making a sand castle.

Therefore, only statement I is true.