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What are some gases in the air?
What gases are in Earth's atmosphere?
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Which gases have the highest percentages in the atmosphere?
What are the components of air?
Key points. The atmosphere is a mixture of gases. The atmosphere is mostly nitrogen (approximately 80%) and oxygen (approximately 20%). The remaining gases are found in much smaller...
- Air and Burning
Some of the gases in the air are elements: nitrogen, N₂....
- Gases in the Atmosphere
Study the gaseous elements and compounds in the Earth’s...
- Air and Burning
Some of the gases in the air are elements: nitrogen, N₂. oxygen, O₂. argon, Ar. Some are compounds, including: carbon dioxide, CO₂. water vapour, H₂O. This information...
Study the gaseous elements and compounds in the Earth’s atmosphere; nitrogen, ammonia, hydrogen, oxygen, metal and non-metal oxides and carbon dioxide.
- Gases
- Water Vapor
- Aerosols
- Atmospheric Chemistry
- Chemistry of The Air
The most abundant naturally occurring gas is nitrogen (N2), which makes up about 78% of air. Oxygen (O2) is the second most abundant gas at about 21%. The inert gas argon (Ar) is the third most abundant gas at 0.93%. There are also trace amounts of carbon dioxide (CO2), neon (Ne), helium (He), methane (CH4), krypton (Kr), hydrogen (H2), nitrous oxi...
Due to the water cycle, the amount of water in the air is constantly changing. The lower troposphere can contain up to 4% water vapor (H2O) in areas near the tropics, while the poles contain only trace amounts of water vapor. The concentration of water vapor decreases drastically with altitude. The upper troposphere has less water vapor than air ne...
Air also contains tiny solid particles called aerosols, such as dust, sea salt, and ash from erupting volcanoes or forest fires. Many of these particles are so small that they are microscopic. Others are large enough to see. Aerosols affect climate by helping clouds form and shading the planet by scattering or absorbing sunlight. In the last centur...
Like everything on Earth, the air is made of chemicals. The chemicals in the air often combine with each other, or with other chemicals from the Earth’s surface, through chemical reactions. Many of these chemical reactions help maintain healthy natural environments and are vital for plants and animals. Nitrogen gas in the atmosphere does almost not...
The table below lists the major gas components and their role in the atmosphere. Click on each molecule name to learn more about them.
air, mixture of gases comprising the Earth’s atmosphere. The mixture contains a group of gases of nearly constant concentrations and a group with concentrations that are variable in both space and time.
- The Editors of Encyclopaedia Britannica
From largest to smallest, Earth’s atmosphere composition contains nitrogen, oxygen, argon, CO 2, and trace gases. Because water vapor is highly variable geographically, it’s excluded from this total. 1. Nitrogen (78.1%) While nitrogen is the most abundant gas in Earth’s atmosphere, it only makes up 0.005% of Earth’s crust in weight (David Darling).
The mixture of gases that makes up the Earth’s atmosphere is known as air. Nitrogen makes up 78 % of this gas, which is mixed with oxygen (21%), water vapour (variable), argon (0.9 %), carbon dioxide (0.04%), and trace gases.
