| chemical |
Water quality is assessed by measuring a variety of chemical substances (as well as biological and physical characteristics). All matter is composed of chemicals - even water (the familiar H 2 O). Most of the chemicals in water such as calcium, sodium and bicarbonate are natural.
출처: www3.gov.ab.ca/env/water/SWQ/faqs04.cfm
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| chemiluminescence |
The generation of light as a result of a chemical reaction.
출처: www.promega.com/techserv/apps/hmnid/referenceinfor...
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| chemical equation |
A short, easy way to show chemical reactions, using symbols instead of words.
출처: jmsscienceweb.tripod.com/vocabulary.htm
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| chemical change |
A change in matter that produces new substances.
출처: jmsscienceweb.tripod.com/vocabulary.htm
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| chemistry |
Once the goals for green products have been defined in terms of environmental test procedures and regulations, the next step is to understand the contribution that chemistry makes to toxicity. Intuition dictates that chemical structure affects environmental properties such as aquatic toxicity and biodegradability. ...
출처: www.bakerhughes.com/bakerpetrolite/green_commitmen...
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