What is a defining feature of a gas?

What is a defining feature of a gas?

• A. It has a fixed shape
• B. It takes up a definite volume
• C. It spreads out to fill the entirety of the container
• D. It cannot be compressed

Answer: (C)

A defining feature of a gas is that it spreads out to fill the entirety of the container it occupies. This behavior is due to the high kinetic energy of the gas molecules, which allows them to move freely and independently of one another. In gases, the intermolecular forces are much weaker compared to solids and liquids, enabling the molecules to disperse over a larger volume. As a result, gases do not have a fixed shape, as they will conform to the shape of any container they are placed in, occupying all available space. This property distinguishes gases from solids, which maintain a fixed shape, and liquids, which have a definite volume but take on the shape of their container to a certain extent.

A defining feature of a gas is that it spreads out to fill the entirety of the container it occupies. This behavior is due to the high kinetic energy of the gas molecules, which allows them to move freely and independently of one another. In gases, the intermolecular forces are much weaker compared to solids and liquids, enabling the molecules to disperse over a larger volume. As a result, gases do not have a fixed shape, as they will conform to the shape of any container they are placed in, occupying all available space. This property distinguishes gases from solids, which maintain a fixed shape, and liquids, which have a definite volume but take on the shape of their container to a certain extent.