Which statement is true about gases compared to solids and liquids?

Which statement is true about gases compared to solids and liquids?

• A. Gases are denser than solids
• B. Gases have a definite volume
• C. Gases will fill their container completely
• D. Gases maintain a fixed shape

Answer: (C)

The statement that gases will fill their container completely is true and reflects one of the fundamental properties of gases. Unlike solids and liquids, which have a definite shape and volume, gases do not have a fixed shape and will expand to occupy the entire volume of their container. This property is due to the high kinetic energy of gas molecules, which allows them to move freely and spread out in all directions. As a result, when a gas is placed in a container, the molecules will disperse evenly throughout the available space, illustrating this characteristic behavior of gases. In contrast, solids maintain a fixed shape due to their closely packed particles, while liquids have a definite volume but take the shape of their container without filling it completely. This distinction is crucial in understanding the behavior of different states of matter.

The statement that gases will fill their container completely is true and reflects one of the fundamental properties of gases. Unlike solids and liquids, which have a definite shape and volume, gases do not have a fixed shape and will expand to occupy the entire volume of their container. This property is due to the high kinetic energy of gas molecules, which allows them to move freely and spread out in all directions. As a result, when a gas is placed in a container, the molecules will disperse evenly throughout the available space, illustrating this characteristic behavior of gases.

In contrast, solids maintain a fixed shape due to their closely packed particles, while liquids have a definite volume but take the shape of their container without filling it completely. This distinction is crucial in understanding the behavior of different states of matter.