Carbon dioxide

CO 2 CO2carbon dioxide (CO 2 )COcarbon dioxide partial pressurecarbon-dioxidecarbonic acid gasR-744carbon emissionsCO²
Carbon dioxide (chemical formula ) is a colorless gas with a density about 60% higher than that of dry air.wikipedia
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Gas

gasesgaseousgaseous state
Carbon dioxide (chemical formula ) is a colorless gas with a density about 60% higher than that of dry air.
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).

Natural gas

gasgas-firednatural-gas
It is present in deposits of petroleum and natural gas. It is produced by combustion of wood and other organic materials and fossil fuels such as coal, peat, petroleum and natural gas.
Natural gas (also called fossil gas) is a naturally occurring hydrocarbon gas mixture consisting primarily of methane, but commonly including varying amounts of other higher alkanes, and sometimes a small percentage of carbon dioxide, nitrogen, hydrogen sulfide, or helium.

Carbon

Ccarbonaceouscarbon atom
Carbon dioxide consists of a carbon atom covalently double bonded to two oxygen atoms.
The largest sources of inorganic carbon are limestones, dolomites and carbon dioxide, but significant quantities occur in organic deposits of coal, peat, oil, and methane clathrates.

Photosynthesis

photosyntheticphotosynthesizephotosynthesizing
As the source of available carbon in the carbon cycle, atmospheric carbon dioxide is the primary carbon source for life on Earth and its concentration in Earth's pre-industrial atmosphere since late in the Precambrian has been regulated by photosynthetic organisms and geological phenomena. Plants, algae and cyanobacteria use light energy to photosynthesize carbohydrate from carbon dioxide and water, with oxygen produced as a waste product.
This chemical energy is stored in carbohydrate molecules, such as sugars, which are synthesized from carbon dioxide and water – hence the name photosynthesis, from the Greek φῶς, phōs, "light", and σύνθεσις, synthesis, "putting together".

Atom

atomsatomic structureatomic
Carbon dioxide consists of a carbon atom covalently double bonded to two oxygen atoms.
For example, he found that water absorbs carbon dioxide far better than it absorbs nitrogen.

Wine

winesfine winewhite wine
Carbon dioxide is produced during the processes of decay of organic materials and the fermentation of sugars in bread, beer and wine making.
Yeast consumes the sugar in the grapes and converts it to ethanol, carbon dioxide, and heat.

Sparkling wine

sparklingfrizzantesparkling wines
It is added to drinking water and carbonated beverages including beer and sparkling wine to add effervescence.
Sparkling wine is a wine with significant levels of carbon dioxide in it, making it fizzy.

Fish gill

gillsGillGill openings
It is returned to water via the gills of fish and to the air via the lungs of air-breathing land animals, including humans.
Each filament contains a capillary network that provides a large surface area for exchanging oxygen and carbon dioxide.

Carbon dioxide in Earth's atmosphere

carbon dioxide emissionsatmospheric carbon dioxideCO2 emissions
As the source of available carbon in the carbon cycle, atmospheric carbon dioxide is the primary carbon source for life on Earth and its concentration in Earth's pre-industrial atmosphere since late in the Precambrian has been regulated by photosynthetic organisms and geological phenomena. Carbon dioxide is the most significant long-lived greenhouse gas in Earth's atmosphere.
Carbon dioxide is an important trace gas in Earth's atmosphere.

Dry ice

dry-icecarbon dioxide icecarbon dioxide
The frozen solid form of, known as dry ice is used as a refrigerant and as an abrasive in dry-ice blasting.
Dry ice is the solid form of carbon dioxide.

Peat

turfpeat cuttingpeat extraction
It is produced by combustion of wood and other organic materials and fossil fuels such as coal, peat, petroleum and natural gas.
The peatland ecosystem is the most efficient carbon sink on the planet, because peatland plants capture CO 2 naturally released from the peat, maintaining an equilibrium.

Redox

oxidationoxidizedreduction
It is an unwanted byproduct in many large scale oxidation processes, for example, in the production of acrylic acid (over 5 million tons/year).
There are simple redox processes, such as the oxidation of carbon to yield carbon dioxide (CO 2 ) or the reduction of carbon by hydrogen to yield methane (CH 4 ), and more complex processes such as the oxidation of glucose (C 6 H 12 O 6 ) in the human body.

Coal

coal seamcoal industrycoal-fired
It is produced by combustion of wood and other organic materials and fossil fuels such as coal, peat, petroleum and natural gas.
Coal industry damages the environment, including by climate change as it is the largest anthropogenic source of carbon dioxide, 14 Gt in 2016, which is 40% of the total fossil fuel emissions.

Greenhouse gas

greenhouse gasescarbon emissionsgreenhouse gas emissions
Carbon dioxide is the most significant long-lived greenhouse gas in Earth's atmosphere.
The primary greenhouse gases in Earth's atmosphere are water vapor (H 2 O), carbon dioxide (CO 2 ), methane (CH 4 ), nitrous oxide (N 2 O), and ozone (O 3 ).

Ocean acidification

acidificationacidified the oceansacidification of the oceans
Carbon dioxide also causes ocean acidification because it dissolves in water to form carbonic acid.
Ocean acidification is the ongoing decrease in the pH of the Earth's oceans, caused by the uptake of carbon dioxide from the atmosphere.

Dry-ice blasting

dry ice blastingblast cleaningCO 2 dry ice process
The frozen solid form of, known as dry ice is used as a refrigerant and as an abrasive in dry-ice blasting.
Dry ice blasting is a form of carbon dioxide cleaning, where dry ice, the solid form of carbon dioxide, is accelerated in a pressurized air stream and directed at a surface in order to clean it.

Deforestation

deforestedland clearingforest clearing
Since the Industrial Revolution anthropogenic emissions – primarily from use of fossil fuels and deforestation – have rapidly increased its concentration in the atmosphere, leading to global warming.
Deforestation also has adverse impacts on biosequestration of atmospheric carbon dioxide, increasing negative feedback cycles contributing to global warming.

Carbonic acid

carbonicvolatile acidBicarbonate
Carbon dioxide also causes ocean acidification because it dissolves in water to form carbonic acid.
It is also a name sometimes given to solutions of carbon dioxide in water (carbonated water), because such solutions contain small amounts of H 2 CO 3.

Joseph Black

BlackBlack, JosephDr Black’s
The properties of carbon dioxide were further studied in the 1750s by the Scottish physician Joseph Black.
Joseph Black (16 April 1728 – 6 December 1799) was a Scottish physicist and chemist, known for his discoveries of magnesium, latent heat, specific heat, and carbon dioxide.

Carbon cycle

carboncarbon cyclingglobal carbon cycle
As the source of available carbon in the carbon cycle, atmospheric carbon dioxide is the primary carbon source for life on Earth and its concentration in Earth's pre-industrial atmosphere since late in the Precambrian has been regulated by photosynthetic organisms and geological phenomena.
Carbon in the Earth's atmosphere exists in two main forms: carbon dioxide and methane.

Plant

Plantaeplantsflora
Plants, algae and cyanobacteria use light energy to photosynthesize carbohydrate from carbon dioxide and water, with oxygen produced as a waste product.
All of these plants have eukaryotic cells with cell walls composed of cellulose, and most obtain their energy through photosynthesis, using light, water and carbon dioxide to synthesize food.

Calcium carbonate

CaCO 3 calcareouscalcium
He found that limestone (calcium carbonate) could be heated or treated with acids to yield a gas he called "fixed air."
Water is added to give calcium hydroxide then carbon dioxide is passed through this solution to precipitate the desired calcium carbonate, referred to in the industry as precipitated calcium carbonate (PCC):

Beer

brewing industrybrewingbeers
Carbon dioxide is produced during the processes of decay of organic materials and the fermentation of sugars in bread, beer and wine making. It is added to drinking water and carbonated beverages including beer and sparkling wine to add effervescence.
During fermentation most of the carbon dioxide is allowed to escape through a trap and the beer is left with carbonation of only about one atmosphere of pressure.

Covalent bond

covalentcovalentlycovalently bonded
Carbon dioxide consists of a carbon atom covalently double bonded to two oxygen atoms.
Such covalent substances are usually gases, for example, HCl, SO 2, CO 2, and CH 4.

Fossil fuel

fossil fuelsoil and gasOil & Gas
It is produced by combustion of wood and other organic materials and fossil fuels such as coal, peat, petroleum and natural gas.
The burning of fossil fuels produces around 21.3 billion tonnes (21.3 gigatonnes) of carbon dioxide (CO 2 ) per year.