a chemical used for preventing infection in an injury antiseptics are used to clean the area before blood is withdrawn.
by-products
something that is produced as a result of making something else
Illness is a by-product of overcrowded living conditions.
carcinogenic
describes a substance which causes cancer
The government found the drinking water to be carcinogenic.
chlorides
a chemical compound that is a mixture of chlorine and another substance
Sodium chloride is the chemical name for table salt.
chlorination
to pass chlorine into water or sewage for purification chlorination will remove impurities from your drinking water.
chlorine
a greenish-yellow gas with a strong smell, which is added to water in order to kill organisms that might cause infection
She developed an allergic reaction to the chlorine in the swimming pool.
compounds
to make by combining parts or elements compounds are two or more elements that are bonded together.
Disinfection
to destroy the harmful bacteria disinfection is an important step in ensuring that water is safe to drink.
elasticity
the quality of being flexible
Natural gut tennis strings offer more elasticity than synthetic strings.
electrolysis
the use of an electric current to cause chemical change in a liquid electrolysis involves separating chemically bonded elements and compounds by passing an electric current through them.
hydrochloric acid
an acid containing hydrogen and chlorine hydrochloric acid must be handled with precautions because it is a highly corrosive liquid; it can damage the skin and the eye.
hydroxide
a chemical compound containing the hydroxyl group
Alkali metal hydroxides such as sodium hydroxide are strong bases and are very soluble in water.
insecticides
a chemical substance made and used for killing insects
Spraying insecticides around the perimeter of the house prevented the spiders from finding their way inside the house.
oxidizing
to remove electrons from
If one element in a reaction contributes oxygen, extracts hydrogen, or extracts electrons, it is said to be an oxidizing agent.
petroleum
a dark thick oil obtained from under the ground petroleum is considered to be a fossil fuel because it was formed from the remains of tiny sea plants and animals that died millions of years ago.
poisonous
capable of injuring or killing by or as by poison
There are many forms of poisonous mushrooms.
saturation point
to reach a stage where no more can be added, contained or accepted
With most households having two or three cars, the demand for automobiles will reach a saturation point in about 30 years.
sodium
a soft silver-white chemical element that is found in salt
Too much sodium is linked to high blood pressure and heart disease.
solution
a liquid into which a solid has been mixed and has dissolved
When sugar dissolves and spreads throughout the water in a glass, it is considered a solution.
synthetic
describes products that are made from artificial substances synthetic tennis strings are more affordable than natural gut tennis strings.
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