A group of chemical compounds composed only of carbon and hydrogen.
substances composed of hydrogen and carbon such as oil, coal and natural gas.
Solid, liquid or gas compounds of the elements hydrogen and carbon.
Compounds containing various combinations of hydrogen and carbon atoms (see VOCs). Hydrocarbons contribute heavily to smog.
organic compounds of hydrogen and carbon, whose densities, boiling points, and freezing points increase as their molecular weights increase. Although composed of only two elements. hydrocarbons exist in a variety of compounds because of the strong affinity of the carbon atom for other atoms and for itself. The smallest molecules of hydrocarbons are gaseous; the largest are solids. Petroleum is a mixture of many different hydrocarbons.
An organic chemical compound consisting only of carbon and hydrogen.
Chemical compounds that consist entirely of carbon and oxygen.
A compound of carbon and hydrogen. Used as a general term to encompass produced (natural) gas, condensates, LPG, crude oils and refined products such as diesel fuel.
chemical compounds composed only of hydrogen and carbon (e.g., fossil fuels are often referred to as hydrocarbon fuels)
Compounds containing only carbon and hydrogen. Petroleum fluids consist chiefly of hydrocarbons.
F a group of organic substances including all substances consisting only of the elements carbon and hydrogen. The most important main groups are aliphatic and aromatic hydrocarbons of which the latter generally has the most serious harmful effects.
Chemicals that consist entirely of hydrogen and carbon. Hydrocarbons contribute to air pollution problems like smog.
organic compunds consisting of carbon and hydrogen usually found in fossil fuels - they are also a byproduct of the internal comustion engine which contributes to smog
A class of compounds that contain hydrogen and carbon. This group of compounds includes the naturally occurring hydrocarbons produced by plankton, as well as many petroleum-based products like gasoline and motor oil. Chlorinated hydrocarbons, a subclass of hydrocarbons, are human derived and generally toxic.
(3) any of a vast family of compounds containing carbon and hydrogen in various combinations, found especially in fossil fuels. Hydrocarbons in the atmosphere resulting from evaporation and incomplete combustion may be a source of air pollution.
A class of compounds containing hydrogen and carbon formed by the decomposition of plant and animal remains. These compounds include coal, oil, natural gas and other substances occurring in rocks.
Organic chemical compounds containing only hydrogen and carbon atoms.
Compounds that are made from only carbon and hydrogen.
A series of chemicals of similar chemical nature ranging from methane through butane , octane ... to heave oils.
A large class of organic compound of hydrogen and carbon. Crude oil, natural gas, and natural gas condensate are all mixtures of various hydrocarbons, among which methane is the simplest.
Organic molecules containing hydrogen and carbon. Released during the incomplete combustion of organic fuels. React with nitrogen oxides and sunlight to form photo- chemical oxidants in photochemical smog.
Compounds composed of carbon and hydrogen atoms.
organic chemical compounds of hydrogen and carbon atoms that form the basis of all petroleum products. They may exist as solids, liquids or gases.
an extensive group of chemicals that always include the elements hydrogen and carbon. Natural sources of hydrocarbons are the by-products of digestion and decomposition (e.g., rotting, spoiling, and putrefying). Coal, natural gas, oil, sugar, starches, and plastics are all composed of hydrocarbons. The incomplete combustion of hydrocarbons from fossil fuels contributes to our pollution and global warming problems.
An organic compound of hydrogen and carbon, including oil, gas and condensate. Return to the top of the page. IN SITU : In the natural or original position. Applied to a rock, soil, or fossil when occurring in the situation in which it was originally formed or deposited.
any substance containing carbon and hydrogen in various combinations (e.g. gasoline and oil)
Compounds containing carbon and hydrogen. Petroleum consists chiefly of hydrocarbons. Also known as organic compounds.
compounds produced by the incomplete burning of gasoline and the evaporation of such things as industrial solvents and oil paints. Hydrocarbons contribute to smog and ozone.
chemical compounds composed of various combinations of hydrogen and carbon atoms. Crude oil is primarily a mixture of hydrocarbon compounds.
A group of compounds containing only carbon and hydrogen.
Family of organic compounds, composed entirely of carbon and hydrogen (for example, coal, crude oil and natural gas).
An organic compound of hydrogen and carbon. HC emissions in exhaust gases are undesirable and are leglislated for. They are known to be carcinogenic but can be removed from the exhaust gas by use of a catalyst.
Chemical compounds which are primarily comprised of carbon and hydrogen such as petroleum and which have been derived from burial of land or sea plants.
Molecules made of hydrogen and carbon atoms.
a large class of molecules containing only carbon and hydrogen; common in petroleum products and other oils.
This refers to all petroleum-based products, such as fuels, oil and grease. It is used at sites for heating, power generation and vehicles. If these products are not handled or stored properly, there can be leaks and spills, which contaminate soil and water.
Raw unburned gasoline; reacts with sunlight to create photo chemical smog.
air pollutants containing hydrogen and carbon that are released during wildland fire.
Chemical compounds comprising hydrogen and carbon molecules.
Chemical compounds consisting of carbon and hydrogen. There are many different hydrocarbons, mainly extracted from petroleum. Hydrocarbons are increasingly replacing freons (CFCs and HCFCs) as cooling agents and insulation gases. They do not contribute to ozone depletion and contribute only negligibly to the greenhouse effect. Most hydrocarbons are highly flammable, and many are hazardous to health.
Chemical compounds that contain hydrogen and carbon. Most motor vehicles and engines are powered by hydrocarbon-based fuels such as gasoline and diesel.
Oil and gas, including condensate and gas liquids (LPG and ethane).
Compounds composed of hydrogen and carbon atoms that release chemical energy when burned, providing an excellent and sought after fuel source.
Gases emitted from incomplete combustion of gasoline and from evaporation of petroleum fuels, representing unburned and wasted fuel.
Compounds containing hydrogen and carbon only. Hydrogenation Action The reaction in which hydrogen adds on across a double or triple bond.
A group of compounds consisting of carbon and hydrogen.
Chemicals containing carbon and hydrogen. ( 080)
Organic chemical compounds of hydrogen and carbon atoms forming the basis of all petroleum products. They may exist as gases, liquids, or solids. An example of each is methane, hexane, and asphalt.
Compounds composed solely of carbon and hydrogen
any compound containing only hydrogen and carbon (eg. methane, CH4; benzene, C6H6) aromatic - any organic molecule that contains a benzene ring (or similar cyclic structure) aliphatic - any organic molecule that doesn't contain an organic benzene ring (or similar cyclic structure)
Compounds found in fossil fuels that contain carbon and hydrogen in various combinations. They are major air pollutants and some may be carcinogenic. Fossil fuels, glues, paints, and solvents contain hydrocarbons. Most people use the terms "hydrocarbon" and "volatile organic compounds" (or VOCs) to mean the same thing.
compounds that consist of carbon and hydrogen. They are found in fossil fuels, glues, paints, and solvents.
Compounds containing only the hydrogen and carbon atoms. May be in solid, liquid or gaseous form.
organic molecules containing hydrogen and carbon; the major components of petroleum
Organic chemical compounds of hydrogen and carbon whose densities, boiling points, and freezing points increase as their molecular weights increase. The molecular structure of the most common petroleum hydrocarbon compounds varies from the simplest - methane, a constituent of natural gas - to the very heavy and complex.
Hydrocarbon (HC) exhaust emissions are a product of incomplete combustion of a hydrocarbon fuel such as gasoline, diesel, natural gas, and propane. Hydrocarbon emissions can also occur from evaporation of liquid hydrocarbons. HC emissions contribute to the formation of ground level ozone which can cause serious damage to human health and vegetation. See also Causes of Excess Hydrocarbons.
Chemical compounds that contain only carbon and hydrogen
Organic compounds composed soley of hydrogen and carbon.
The hydrogen and carbon residue that are left over after gasoline combustion. Hydrocarbon emissions are regulated by Federal law.
Volatile organic compounds that react with nitrogen oxides (NOx) in the presence of sunlight to form ground-level ozone, a serious lung irritant. Hydrocarbon emissions failures can result from fuel combustion problems that allow unburned fuel to escape from a vehicle's exhaust pipe.
compounds containing only hydrogen and carbon. Examples: methane, benzene, and decane.
Organic chemical compounds made up mainly of Hydrogen and Carbon. A term given to all types of crude oil and gas.
Substances containing only hydrogen and carbon. Fossil fuels are made up of hydrocarbons. Some hydrocarbon compounds are major air pollutants.
Hydrocarbons are a group of compounds which contain the elements hydrogen and carbon. Useful products from oil
Compounds made of carbon and hydrogen, used to describe many fossil fuels.
organic chemical compounds that consist only of carbon and hydrogen and are a major component of petroleum products, natural gas and coals. A number of exhaust hydrocarbons are toxic, with the potential to cause cancer.
Organic chemical compounds that consist only of carbon and hydrogen. Hydrocarbons are usually major components of petroleum products, natural gas, and coals. Hydrocarbons that are not burnt completely during combustion contribute to air pollution.
Organic compounds containing carbon and hydrogen.
general term for oil, gas, condensate and other petroleum products.
A large group of chemical compounds, many of which, such as gasoline and diesel fuel, are derived from crude oil.
Chemical compounds that consist entirely of carbon and hydrogen.
chemicals containing only carbon and hydrogen. These are of prime economic importance because they encompass the constituents of the major fossil fuels, petroleum and natural gas, as well as plastics, waxes, and oils. In urban pollution, these components--along with NOx and sunlight--contribute to the formation of tropospheric ozone.
Compounds containing various combinations of hydrogen and carbon atoms. They may be emitted into the air by natural sources (e.g., trees) and as a result of fossil and vegetative fuel combustion, fuel volatilization, and solvent use. Hydrocarbons are a major contributor to smog. Hydrocarbons include aromatics and volatile organic compounds, many of which are toxic.
Strictly speaking, organic molecules consisting of just carbon and hydrogen; often loosely applied also to derivatives of hydrocarbons containing oxygen, halogens, etc. The atmospheric burden of hydrocarbons is provided from both natural and anthropogenic emissions.
Organic compounds containing hydrogen and carbon found in many heating fuels.
Colorless gaseous compounds originating from evaporation and the incomplete combustion of fossil fuels.
organic compounds containing on]y hydrogen and carbon. The simplest is methane (CH4).
Organic chemical compounds containing hydrogen and carbon atoms. They form the basis of all petroleum products.
Compounds found in fossil fuels, glues, paints, and solvents that can react with other pollutants to cause smog. (Also referred to as Volatile Organic Compounds (VOCâ€™s)).