Jenny takes a piece of paper and dips it in a bowl of water. The paper is now damp and mushy. Which of the following is/are true about the change that occurs when the paper gets wet?

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 because when paper gets wet, it changes its state (from dry to damp), but it does not create a new substance. The paper remains paper.

II. It makes a new substance. - This statement is false. The chemical composition of the paper does not change when it gets wet; it simply absorbs water.

III. It is a chemical change. - This statement is false. A chemical change involves a change in the substance's chemical identity, which does not occur in this case.

Thus, only statement I is true.