-Chemistry+and+Identifying+Pollutants

Chemistry and Identifying Pollutants media type="youtube" key="06B1FKDLTTY" width="425" height="350"


 * Chemistry and Identifying Pollutants**

Chemical pollutions occurs when chemicals resulting from human activities enter the environment, contaminating air, water or soil. Acid rain, greenhouse gases and ozone are all examples of chemical pollutant. There are three common chemistry on pollutants.

Chemicals That Cause Water Pollutants
> Industrial emissions can also cause water pollution. An example is mercury in waste water from paper manufacturers. Instead of remaining inert as expected, the mercury reacted to bacteria in the water and changed to methyl mercury. Now, mercury levels in fish such as swordfish can pose dangers to people who eat it.
 * Pesticides and fertilizers that contain nitrates and phosphates are a source of chemicals that cause water pollution. These chemicals seep into the groundwater and mix with run off moving to lakes and rivers.

Chemicals that Cause Air Pollutants
> Sulfur dioxide is produced when coal is burned. It is an ingredient of acid rain and can cause lung damage to people who breathe large amounts of it. > Nitrogen oxides are a byproduct of motor vehicles such as __ [|cars] __, trucks and airplanes. These oxides are also an ingredient of acid rain and can cause lung damage to people over time. > Other chemicals that cause air pollutants include ozone, carbon monoxide and lead.
 * A major source of chemical pollutants in the air is fossil fuels burned by utilities, industries and motor __ [|vehicles] __.

Chemical Pollutant in Soil
Chemical pollutants in soil can be caused by overuse of fertilizers, pesticides and herbicides. __ [|Construction] __ and demolition sites are also sources of soil pollutants, as are mines, landfills and foundries.