Hydrocarbon
* Many hydrocarbons dissolve only slowly in water.
* Most hydrocarbons are polar.
* Most hydrocarbons consist of atoms
  - hydrogen atoms
  - have a lower specific gravity than water
* Most hydrocarbons react to sunlight
  - with oxygen
* Some hydrocarbons affect integrity
  - are produced by ethane
  - burn more smoothly than others
  - evaporate into the air very quickly, and others evaporate more slowly
* Some hydrocarbons find in mineral oil
  - pose pollution problems
* Some hydrocarbons pose serious pollution problems
* Some hydrocarbons prevent crop growth
* Some hydrocarbons react with nitrogen oxide
* also arise from gasoline-powered vehicles and from industrial processes
  - contain harmful compounds such as benzene, a known toxin
  - serve as semiochemicals
* are a group of organic compounds containing only carbon and hydrogen
  - major cause of ground-level ozone pollution, or smog
  - also a product of incomplete combustion of fuel
  - any molecules that just contain hydrogen and carbon
  - chemical compounds made mainly of carbon and hydrogen
  - chemicals that can exist as both gases and solid particles
  - completely ozone friendly, and have minimal global warming potential
  - compounds that contain carbon and hydrogen
  - drop-in substitutes for chemical refrigerants
  - easily vaporized compounds containing hydrogen and carbon
  - excellent refrigerants, but they are also flammable and explosive
* are generally crude oil, gasoline, hexane, naptha, fuel oil, etc
  - naptha, fuel oil, hexane, etc
  - greenhouse gases and help create smog in cities
  - in the ink and paper is bleached white with chlorine
  - inanimate objects
  - isotopically lighter than the carbon from related sediments
  - major contributors to the ozone depletion
  - molecular compounds
  - molecules containing only the elements carbon and hydrogen in the form of chains
  - on the basic place among specific substances
* are organic compounds made entirely of molecules featuring just hydrogen and carbon
  - that contain only hydrogen and carbon
  - matter
  - part of the necessary ingredients for life
  - signatures of life
  - soluble in aromatic solvents such as toluene and xylene
* are the building blocks of coal, oil and other fossil fuels
  - chief chemicals of inhalant abuse
  - fundamental family of molecules studied in the field of organic chemistry
  - lifeblood of a technological society
  - other main ingredient in photochemical smog
  - unburned fuel vapors
* can be toxic and play a primary role in the formation of ozone
  - to aquatic organisms
  - quench signal response and generate ghost peaks
  - take on many different forms
* cause severe eye irritation and possibly corneal abrasions
  - smog and are important in the formation of ozone
* causes nose and eye irritation, chronic lung problems, asthma, bacterial infections.
* contain only the elements hydrogen and carbon
  - the building blocks for life
* continue to be the major source of energy.
* contribute to smog and ozone
  - the formation of ozone and the resulting smog problem
* defat mucous membranes and cause buccal and gastrointestinal irritation.
* form hazes of smog high in the upper atmosphere.
* have zero ozone depleting and negligible global warming qualities
  - depletion potential, and very low global warming impact
* include compounds
* is an organic compound
* migrate vertically and laterally as far as sufficient permeability is present.
* move into the porous layers and are trapped by an impermeable rock layer or caprock.
* occur as liquids, gases, or solids.
* only contain hydro gen and carbon atoms.
* react with nitrogen oxides and sunlight to form ozone
  - other chemicals to form smog
  - sunlight when released into the atmosphere to form ozone, a pollutant
* result in longer lifetimes than salt water.
* seeping from the seafloor change their environment in several important ways.
* solvents down in the lungs can cause incredibly bad chemical pneumonias.
* tend to pass through zooplankton unchanged.
* traps frequently display anomalous geothermal gradients.
+ Organic chemistry, Hydrocarbons: Chemistry
  * The study of hydrocarbons is a very large part of organic chemistry. Hydrocarbons are molecules containing only the elements carbon and hydrogen in the form of chains. Hydrocarbons can be classified into two categories based on the presence of a benzene ring, a circular type of hydrocarbon. Aliphatic hydrocarbons do not contain a benzene ring and aromatic hydrocarbons do.