Essays Tagged: "substances"

Sacred Cow - Vegetarianism

medical problems can arise. Also, those supplements are usually man made and do not require some of substances, still un-identified, in meat.A carnivorous diet has always been in American history. Tur ...

(3 pages) 129 2 2.6 Oct/1996

Subjects: Humanities Essays > Health & Medicine

Aristotle: A Comprehensive View on Nature and Society

tance is 'an individual man and [or] an individual horse.' Aristotle still classifies universals as substances, for they define what constitutes the substance, and without these universals, a substanc ... , and without these universals, a substance would not be what is. There are four characteristics of substances: a substance is a "this", not a qualification or a 'such' (which stresses individuality); ...

(5 pages) 323 0 4.4 Dec/1994

Subjects: Humanities Essays > Philosophy > Classical Philosophy


of ethyl alcohol, whether in the form of familiar alcoholic beverages or as a constituent of other substances. Alcoholism is thought to arise from a combination of a wide range of physiological, psyc ...

(3 pages) 118 1 4.4 Jan/1997

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

Chemical reactions

specifically, combustion. He said that a substance called phlogiston escaped into the air from all substances during combustion. He explained that a burning candle would go out if a candle snuffer wa ... se into ammonia, carbon dioxide, and water. Polymerization reactions are reactions in which simpler substances combine to form a complex substance. The thing that makes this reaction unusual is that t ...

(8 pages) 210 0 4.1 Mar/2002

Subjects: Science Essays > Chemistry

A heoin Term paper, describing what heroin is and how it effects the body

a morphine base. After laboratory refining, heroin is produced. Some heroin is combined with other substances to form new types. These substances include starch, sugar, powdered milk, and/or strychni ... way or attack people. The effects described are not the only ones. As previously mentioned, not all substances in heroin are known so users are at many risks including death.There is a variety of plac ...

(3 pages) 111 0 4.4 Apr/2002

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


lants without soil. It was developed from the findings of experiments carried out to determine what substances make plants grow and the composition of plants. This dates back as early as the 1600s. Pl ... ents was in 1600 when Belgian Jan van Helmont showed in his classical experiment that plants obtain substances or nutrients from water. He planted a 5-pound willow shoot in a tube containing 200 pound ...

(10 pages) 137 0 4.2 Apr/2002

Subjects: Science Essays > Agriculture

The Immune System

er harmful invaders. The immune system provides protectionagainst a variety of potentially damaging substances that can invade the body. Thesesubstances include disease-causing organisms, such as bact ... gens are disease-causing organisms such as bacteria and viruses. The immune system reacts to foreignsubstances through a series of steps know as the immune response. Any agent perceived asforeign by a ...

(3 pages) 157 1 3.4 Oct/1996

Subjects: Humanities Essays > Health & Medicine

World Issues

the environment andattached to it are certain characteristics. It is the addition of a substance orsubstances at a faster rate than the environment can accommodate.Certain pollutants like arsenic and ... pleasant odors. Many pollutants can not be seen or smelled, whichallows gases to combine with other substances or gases, creatingcompounds that are harmful to living things and inanimate objects. One ...

(5 pages) 125 1 3.3 Apr/2002

Subjects: Social Science Essays

Basic concepts and example in entropy (physical chemistry)

ocess with 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 r ...

(3 pages) 70 0 4.4 Apr/2002

Subjects: Science Essays > Chemistry

"The Scarlet Letter" How would the characters see the white whale? Mentiones also Melville's Moby Dick

nique view on the great white whale. '...all these are but subtle deceits, not actually inherent in substances, but only laid on from without; so that all deified Nature absolutely paints like the har ...

(4 pages) 46 0 3.0 Mar/1997

Subjects: Literature Research Papers > North American > "The Scarlet Letter" by Nathaniel Hawthorne

Analytical Chemistry

suring such physical properties as pH, color, and solubility. Wet analysis involves the studying of substances that have been submerged in a solution and microanalysis uses substances in very small am ... ter must be treated chemically to dissolve them without any loss of analyte. Dissolving intractable substances such as ores, plastics, or animal tisure is sometimes extremely difficult and time consum ...

(4 pages) 116 0 4.1 Jan/1996

Subjects: Science Essays > Chemistry

DOPAMINE NB:sorry for the previous esssay it was sent by mistake i didn't mean to send two same essays

uch to discover the 'mechanism of addiction' , so one might ask some questions like 'Why do certain substances have the power to make us feel so good? Why do some people fall so easily into the thrall ... Why do some people fall so easily into the thrall of alcohol, cocaine, nicotine and other addictive substances, while others can, literally, take them or leave them?'. (Time, May 26, 1997 pp: 43)The a ...

(13 pages) 178 1 4.9 Jun/2002

Subjects: Social Science Essays

Tjis essay explains the evolution of the atomic theory and how it has changed over the last cenutry or so.

small particles,like a small marble. Dalton's atomic theory consisted of three parts. Theywere:*All substances are made of atoms. Atoms are small particles that cannotbe created, divided, or destroyed ... ance are exactly alike, atoms of different atomsare different.*Atoms join with other atoms of other substances to make new substances.Dalton's theory was proved wrong when new information was discover ...

(2 pages) 48 1 3.0 Jun/2002

Subjects: Science Essays

This was an essay on aphrodisiacs. A list of alleged aphrodisiacs and their affects on sexual behavior, as well as definition and history.

d was marijuana. You have to remember that every person is different and has different reactions to substances. What one person considers an aphrodisiac might be totally different than what another pe ... ty, Aphrodite. The use of aphrodisiacs can be dated back to Ancient Greece and Rome with the use of substances such as satyrion and cantharides. Satyrion is a plant unknown to us today, it supposedly ...

(6 pages) 123 2 4.7 Jul/2002

Subjects: Humanities Essays > Health & Medicine > Sex & Sexuality


t is not a plant or a animal. Copper is ametallic metal. It can never be broken down into differnet substances bynormal chemical means. Copper was one of the first metals known to humans.People liked ...

(3 pages) 45 0 4.0 Feb/1997

Subjects: Science Essays > Chemistry


amples of its uses.CONDUCTIVITYConductivity is the ability of a substance to carry electricity. Somesubstances like copper, aluminium, silver and gold do it very well. They arecalled conductors. Other ...

(6 pages) 72 0 3.4 Mar/1997

Subjects: Science Essays > Physics

Personal opinion of the harm reduction model. A harm reduction approach

e harm reduction model, I will focus this method with what I believe to be most prevalently misused substances.Originally, I was under the misconception that abstinence was the only method of approach ...

(6 pages) 129 0 5.0 Oct/2002

Subjects: Humanities Essays > Health & Medicine > Drugs

Against Smoking This is a persuasive essay and describes many reasons why you wouldn't want to be a smoker.

o drop. Before youknow it, you will have heart disease. Also, cigarettes contain many cancer-causingsubstances, which hits your lungs and will leave you with lung cancer, anotherlife-threatening disea ... roughly 3, 700 differentchemicals. Many of them can be poisonous; others are powerful cancer-causingsubstances, such as formaldehyde. The more second-hand smoke you breath, the greaterrisk of a heart ...

(1 pages) 34277 5 3.9 Dec/2002

Subjects: Social Science Essays

Effects of Creatin.

had a fascination with being excellent at what they do, and athletics have been no exception. Many substances exist, and many have been criticized and analyzed for their safety, legality, and moralit ... that an athlete would love to be able to attain legally, not compromising their safety with illegal substances such as steroids, but through essentially, natural and relatively safe means. Luring to s ...

(6 pages) 71 0 3.0 Dec/2002

Subjects: Humanities Essays > Health & Medicine > Sports

Biology-action of amylase enzyme on starch

ature.PredictionMy prediction is that the lower the temperature the longer it will take for the two substances to turn a pure yellow indicating the starch has been converted into sugars (glucose).Scie ... ct the test. We repeat the test twice to check our results and we will keep the same amount of both substances.MethodFirst we measure 12 ml of starch in a syringe and put it into one test tube. We the ...

(3 pages) 75 0 3.0 Dec/2002

Subjects: Science Essays > Biology