Question

A container is divided into two halves by means of a removable wall between the two halves. The three substances shown are placed into the left half of the divided container. If the dividing wall in the container is removed, what can be said about how the substances will react to the increased volume of space? A. Only substances A and B will expand into the larger volume. B. All three substances will expand into the larger volume. C. Only substance A will expand into the larger volume.D. Only substance B will expand into the larger volume.

Answer 1

As we can see, molecules of substance A are more distant from each other, while that of substance b are closer and substance c are very close.

We can therefore assume that substance A is in the gaseous state, substance b is in the liquid state and substance c is in the solid state.

In the solid state, the shape and volume are well defined. In the liquid state, shape and volume are more or less defined, whereas in the gaseous state, shape and volume are not defined.

Substances in the gasous and liquid state will react to the increased volume of space.

Answer: Alternative "A"