You have a balloon that changes its shape when it rests on a surface. However, the volume of the balloon always remains the same. What can be concluded about the balloon?

Question

A.
The balloon holds a gas, such as air.
B.
The balloon holds a liquid, such as water. 
C.
The balloon holds a solid, such as ice. 
D.
The balloon is untied, allowing its contents to escape.

Answer 1

The correct conclusion about the balloon is:

A. The balloon holds a gas, such as air.

This is because a gas will occupy the shape of the balloon and can change shape when the balloon rests on a surface while maintaining the same volume. In contrast, liquids and solids do not change shape in the same way, and if the balloon were untied, the contents would escape, leading to a loss of volume.