This is a list of gases at standard conditions, which means substances that boil or sublime at or below 25 °C (77 °F) and 1 atm pressure and are reasonably stable.

Mar 23, 2021 · Get the definition of a gas in science. See examples of gases including elements, mixtures, and gases in everyday life.

Mar 25, 2025 · gas, one of the three fundamental states of matter, with distinctly different properties from the liquid and solid states. The remarkable feature of gases is that they appear to have no structure at all.

Gas is one of the four fundamental states of matter. The others are solid, liquid, and plasma. [1][better source needed] A pure gas may be made up of individual atoms (e.g. a noble gas like neon), elemental molecules made from one type of atom (e.g. oxygen), or compound molecules made from a variety of atoms (e.g. carbon dioxide).

Gases have the lowest density of the three, are highly compressible, and fill their containers completely. Elements that exist as gases at room temperature and pressure are clustered on the right side of the periodic table; they occur as either monatomic gases (the noble gases) or diatomic molecules (some halogens, N₂, O₂).

In this chapter, we explore the relationships among pressure, temperature, volume, and the amount of gases. You will learn how to use these relationships to describe the physical behavior of a sample of both a pure gaseous substance and mixtures of gases.

May 4, 2019 · A gas is made of particles without a set shape or volume, unlike solids and liquids. Gases at room temperature include air, chlorine, ozone, oxygen, and hydrogen. Gases have lots of space between particles and are usually clear, with a few exceptions.

Feb 16, 2022 · Gas is a state of matter that has no fixed shape and no fixed volume. Gases have a lower density than other states of matter, such as solids and liquids. There is a great...

Feb 28, 2024 · Gases, as substances in the gaseous state, represent one of the three fundamental states of matter. They possess notable compressibility and maintain considerable intermolecular distances.

Gases are the highest-energy state of matter. What makes them unique is that they have no fixed shape or volume. Unlike solids and liquids, gases take the shape of their container. They’re …