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Gas - Wikipedia A pure gas consists of individual atoms (e g a noble gas like neon), or molecules (e g oxygen (O 2) or carbon dioxide) Pure gases can also be mixed together such as in the air What distinguishes gases from liquids and solids is the vast separation of the individual gas particles This separation can make some gases invisible to the human
10: Gases - Chemistry LibreTexts 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)
Intro to Gases - ChemTalk 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 highly compressible and can change volume under different pressures and temperatures
Definition and Examples of Gas in Chemistry - ThoughtCo 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
Gases - Division of Chemical Education, Purdue University Common gases at room temperature include both elements (such as H 2 and O 2) and compounds (such as CO 2 and NH 3) Elements that are gases at room temperature are all nonmetals (such as He, Ar, N 2, O 2, and so on)
List of gases - Wikipedia 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