In which state of matter does a product tend to expand indefinitely?

A gas is the state of matter that tends to expand indefinitely. This characteristic is primarily due to the arrangement and behavior of gas molecules. In a gaseous state, molecules are much farther apart compared to those in solids or liquids. They are in constant motion, colliding with each other and with the walls of their container. Because of this high kinetic energy and minimal intermolecular forces, gases can fill the entirety of any given space, expanding to fill the volume of their container regardless of its size.

In contrast, solids maintain a fixed shape and volume because their molecules are closely packed in a rigid structure. Liquids have a definite volume but take the shape of their container, meaning they can flow but do not expand indefinitely. The concept of electrical does not pertain to states of matter traditionally defined in physics. Therefore, the unique properties of gases allow them to expand indefinitely, distinguishing them from solids and liquids.