Question

Which of the following is true concerning gases?

O gases have much higher densities than liquids.
O gases mix uniformly with other gases.
O gases are not compressible.
O gases have their own volume and shape, independent of the container that holds them

Answer 1

Gases do not have a definite shape or volume, are compressible, have low densities, and mix uniformly with other gases.

Step-by-step explanation:

Properties of Gases

When considering the properties of gases, a few key characteristics stand out. Gases have no definite shape or volume and will fill any container they are placed in. This is because the particles in a gas have enough energy to move about randomly and completely overcome intermolecular interactions. As a result, unlike liquids, gases are also compressible due to the large spaces between particles and the weak forces except during collisions.

The density of gases is also significantly lower than that of liquids or solids, often being one-thousandth or less. This low density allows for easy mixing with other gases, leading to a uniform mixture or solution. For instance, air is a solution consisting primarily of nitrogen and oxygen gases that have mixed together spontaneously.

Therefore, the statement that "gases mix uniformly with other gases" is true concerning the properties of gases. Gases do not have higher densities than liquids; they are compressible and do not maintain a definite volume or shape independent of their container.