Essays Tagged: "compounds"

Ceramic Glazing

best of present-day glazes.The Egyptians, who undoubtedly made the first glazed ware, used the soda compounds that are found in abundance in the desert areas of the Near East. The turquoise glazed bea ...

(3 pages) 121 0 4.0 Dec/1996

Subjects: Art Essays


th this development in space technology came a large quantity of information and discoveries of the compounds of the universe, and scientific questions seemed to jump out in equal number. The question ...

(3 pages) 144 0 4.6 Mar/1997

Subjects: Science Essays > Astronomy


als or messages to alter behavior in other organisms of the same species. Pheromones are a class of compounds that insects and animals produce to attract members of their own species. These compounds ... es than the reverse.Research over the years has found that the male pheromones belong to a class of compounds called steroids, in particular derivatives of androstenone, which are secreted by perspira ...

(2 pages) 49 0 4.0 Dec/1996

Subjects: Science Essays > Chemistry

Time's Oldest Debate.

were created in abundance. By chance or simply because of the laws of nature, those life producing compounds bonded together to create the oldest known life form on earth -- a bacterium. Other life f ...

(5 pages) 107 0 4.4 Jan/1996

Subjects: Humanities Essays > Religion & Faith

Analysis on Chapters 14 and 15 of "I Know Why the Caged Bird Sings" by Maya Angelou's

ss, and mother. Through this autobiographical piece, Maya's use of figurative language and allusion compounds her thoughts, as she depicts how one can supersede the expected barriers and soar to new h ...

(3 pages) 86 0 4.7 Dec/1996

Subjects: Literature Research Papers > North American

Basic concepts and example in entropy (physical chemistry)

a loss of entropy: (An Reaction which absorbed energy and result formation of more order substances/compounds)Recrystalistaion:In order to dissolved the crystals in the solvent, energy is required to ...

(3 pages) 70 0 4.4 Apr/2002

Subjects: Science Essays > Chemistry


n organic chemist at General Motors Corporation. He was looking for inert, non-toxic, non-flammable compounds with low boiling points that could be used as refrigerants. He found what he was looking f ... ling points that could be used as refrigerants. He found what he was looking for in the form of two compounds: dichlorodifluoromethane (CFC-12) and trichloromonoflouromethane (CFC-11). In both compoun ...

(5 pages) 83 0 3.4 Mar/1997

Subjects: Science Essays > Chemistry


AlcoholsIntroductionAlcohols are a group of compounds which have a hydroxyl group joined to either an alkyl group or a cycloalkyl group. A hydro ... ri, and so on, is put just before the suffix -ol.Homologous seriesA homologous series is a group of compounds which have a certain pattern in their structures, therefore have similar chemical properti ...

(4 pages) 139 0 4.1 May/2002

Subjects: Science Essays > Chemistry

The Chemical Element Florine

THE CHEMICAL ELEMENT FLUORINEFluorine is the thirteenth most abundant element and compounds containing fluorine are found in all living things. It is a tiny atom and is the most reac ... . It is a tiny atom and is the most reactive of all the elements. It can only be separated from its compounds using large amounts of electrical energy. Fluorine is so reactive that it can extract oxyg ... Fluorine is so reactive that it can extract oxygen from water and it also releases oxygen as a gas. Compounds of fluorine are called fluorides and most fluorides dissolve in water and oil. Fluorine is ...

(3 pages) 47 0 4.0 Aug/2002

Subjects: Science Essays


ts against rust and weak acids in food if thecan is made out of tin instead of aluminum.Some common compounds of tin are organtin a combination of carbon andtin. When tin is formed with carbon to make ... of carbon andtin. When tin is formed with carbon to make organtin it can make more than 500organtin compounds. These compounds are used in everyday things. One is toothpastecontainers and also are thi ...

(2 pages) 31 0 4.4 Jan/1996

Subjects: Science Essays > Chemistry

Apartheid in Modern South Africa

f gold and diamonds in South Africa during the 19th century, ultimately lead to racially segregated compounds for mine workers becoming the fore fathers of apartheid(Kanfer 79). By the 1920s de facto ...

(3 pages) 119 0 3.7 Jul/1996

Subjects: Law & Government Essays > Civil Rights > Black Awareness & Racism

Vitamin C

Got an A AIntroductionWhat is Vitamin C?Vitamin C also known as Ascorbic acid is one of the compounds that is necessary for the growth, health, and build of the skeletal structure as well as t ...

(3 pages) 90 1 4.0 Jan/1996

Subjects: Science Essays > Chemistry


and animals. I will also tell you about it's chemical structure and give examples of types of these compounds, such as cholesterol.The organic compound of lipids have many similarities. They are almos ... membranes. They make it so that the cell can maintain it's shape by keeping water and water-soluble compounds from passing through it. The lipids that are waxy are usually used to make protective coat ...

(2 pages) 68 0 2.0 Nov/1996

Subjects: Science Essays > Biology

Atmosphere and characteristics of Jupiter

Bizarre, colorful clouds of methane and ammonia compounds ripple through the turbulence of the Jovian atmosphere.When we look at Jupiter, whether it ... ogen, 18 % helium and traces of nearly all other elements. Most of this is in the form of molecular compounds, ammonia, methane, molecular hydrogen and water. The upper areas of the zones are believed ...

(3 pages) 65 0 4.2 Mar/2003

Subjects: Science Essays > Astronomy

This is a essay about the harmful effects of marijuana and how they are ruining society today.

uana also smoke cigarettes and other drugs. The smoke frommarijuana contains similar cancer-causing compounds as tobacco, but sometimes inhigher concentrations. From an article that I read, I found an ...

(3 pages) 87 0 3.3 May/2003

Subjects: Social Science Essays > Controversial Issues > Drugs & Alchohol

Standard Analytical Method; Fiber Distribution.

7VERSION:2COPY NO:1PREPARED BY:DATE:AUTHORISED BY:DATE:TITLE:Polypropylene, glass fibre reinforced compounds: Determination of the fibre length distribution.SAFETY:THE METHOD USES SMALL QUANTITIES OF ...

(7 pages) 60 1 3.7 Jul/2003

Subjects: Science Essays > Chemistry

"Electron Microscopes" - Electron Microscopes (EMs) are scientific instruments that use a ray of electrons to examine small matter on a very fine scale.

shape and size of the particles that make up the matter.*Composition; this is the elements and the compounds the matter is composed of.*Crystallographic Information; this is how the atoms are arrange ...

(3 pages) 49 3 4.8 Oct/2003

Subjects: Science Essays > Biology

The Ozone hole,what causes the hole, what are some of the effects that it has on humans and animals,and what is being done to try in slow down the process.

, reach the stratosphere and begin to destroy the ozone (Haas 2001).So, what are CFCs? Manmade CFCs compounds were developed in the early 1930s for a variety of industrial and commercial applications, ... vels over Halley Bay, Antarctica, which was caused by chemical reactions with chlorine and nitrogen compounds. Research was initiated that found CFCs to be largely responsible for the anomalously low ...

(4 pages) 65 0 4.7 Nov/2003

Subjects: Science Essays > Earth Sciences > Geography

Environmental effects.

sphere of between 50 and 100 years; contain 2 or 3 chlorine atoms.b.CFCs substitutes ( transitional compounds)i.HCFCs - one or more of the chlorine atoms has been replaced by hydrogen atoms, lifetime ... not damaging to ozone - lifetime in the atmosphere about 20 years.c.All of these three families of compounds are also very potent greenhouse gases.d.Some hydrocarbons - propane and isobutene - are no ...

(17 pages) 508 0 4.1 Nov/2003

Subjects: Area & Country Studies Essays

Motivation in the Workplace applying Maslow and Herzberg theories.

berg. Using Maslow's hierarchy of needs and Herzberg's motivation-hygiene supposition, this company compounds the necessity to encourage effective productivity of its employees to provide efficient se ...

(6 pages) 1007 0 4.9 Dec/2003

Subjects: Businesss Research Papers