Atom Book
.... if you wrote it HE it could mean something totally different so be
careful.
An isotope has fewer or more neutrons than protons. So there isn't the same
number of protons as neutrons.
Well now that I'm big again I hope you learned everything you wanted to know
about atoms.
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Historical Development Of Atomic Structure
.... His name was Mendeleyev, and he was a renowned
teacher. Because no good textbook in chemistry was available at the time, he
wrote the two-volume Principles of Chemistry (1868-1870), which later became a
classic. During the writing of this book, Mendeleyev tried to classify the
elements according to their chemical properties. In 1871 he published an
improved version of the periodic table, in which he left gaps for elements that
were not yet known. His chart and theories gained acceptance by the scientific
world when three elements he "predicted"gallium, germanium, and scandiumwere
subsequently discovered In 1856 another impo .....
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The Bunsen Burner
.... the barrel. Then you would cut off the gas.
In the conclusion the hottest part of the flame was the top part of the
flame, and the coolest part of the flame was the blue cone in the middle. Soot
was on the bottom of the dish the first time. When you put the dish back in the
hottest part of the flame. It had cleaned the bottom of the dish. That is how
you use a Bunsen burner.
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Cosmetology
.... vocational school, which some high
schools offer. You could also go to a beauty school. You must be 16 or
older to go to a beauty school. In your classes your training courses may
include lectures, demonstrations and practice. Students usually practice
with mannequins. After schooling, you must take a state licensing exam
consisting of written and practical parts. You renew that license every
two years by taking the test again each time.
You get a lot of experience in the vocational school, but some
shops still require some experience in a salon, but some will start
beginners. Usually when they start beginners, they will st .....
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The Creation Of The Universe
.... into becoming a puppet-master and "pulling the strings" of the Earth
and all of the people therein.
Since this paper touches upon many scientific terms, I feel that in
order for the reader to correctly grasp the content I must first define
three words: Theory, Law, and Hypothesis. The definitions will allow for a
greater understanding of this essay and give us an even ground upon which
to begin.
Theory; (th˙1e-r˙, th˙r1˙) noun
1. a. Systematically organized knowledge applicable in a relatively
wide variety of circumstances, especially a system of assumptions, accepted
principles, and rules of procedure devised .....
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Chloroflourocarbons
.... they could be kept in liquid form and in an only slightly
pressurized can. Thus, in 1947, the spray can was born, selling millions of
cans each year. Insecticides were only the first application for CFC spray cans.
They soon employed a number of products from deodorant to hair spray. In 1954,
188 million cans were sold in the U.S. alone, and four years later, the number
jumped to 500 million. CFC filled cans were so popular that, by 1968, 2.3
billion spray cans were sold in America.
The hopes of a seemingly perfect refrigerant were diminished in the late
1960's when scientists studied the decomposition of CFCs in the .....
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A Chemist
.... bachelors degree your salary will be somewhere around $24,000 a year.
If you start work with a masters degree you can expect about $32,000 and with a
Ph.D. as mcuh as $60,000 ("Chemists")
Research and development is the subcareer most chemist choose. In this
subfield your primary goal would be to look for and use information about
chemicals ("Chemists"). A chemists also spends a considerable amount of time in
an office where he/she stores information or reports about research he/she has
made. There are two different types of research basic research and applied
research. In basic research a chemists studies the qualities a .....
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Dangers And Destructions Of Floods And Hurricanes
.... United States in the
early 1990's 50% of the population was on a coastal county.1 Although they
shrink before reaching shore, wind generated waves have been spotted to be
as high as 30 m (100 ft) in the middle of the ocean.2 In 1970 a major storm
in the Bay of Bengal produced heavy seas that flooded regions of East
Pakistan, killing about 200,000 people.3
River flooding can happen a number of ways. The causes are rain,
snowmelt, and ice jams. Soil can not absorb as much water with continuos
moistening. The longer that precipitation lasts the more water flows into
streams as runoff. Cloudburst floods only last for a c .....
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The Chlorine Debate: How White Do You Want It?
.... if a Greenpeace campaign is successful.
The powerful environmental group has mounted a well-organized campaign that has
as its objective nothing less than a total, worldwide ban on chlorine. With the
public health and billions of dollars at stake, the debate over chlorine has
become one of the world's most contentious and controversial issues. "Is a
chlorine-free future possible?" asked Bonnie Rice, a spokesperson for
Greenpeace's Chlorine Free Campaign. "Yes, it can be done without massive
disruption of the economy and of society, if it is done in the right matter."
(Gossen 94)
The chlorine industry and its allies say a tota .....
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Chlorine
.... and other halogens. If you were to mix hydrogen and
chlorine gases and keep them in a cool dark place, the mixture would be stable,
but if it were exposed to sunlight, it would cause a strong explosion. If a
burning candle were placed in a sealed container of chlorine, it would keep
burning, and it would produce thick, black, smoke, leaving behind soot. There
are five oxides that chlorine can form: chlorine monoxide; dichloride monoxide;
chlorine dioxide; chlorine heptoxide; and chlorine hexoxide. Chlorine is used in
bleaching agents, disinfectants, monomers (plastics), solvents, and pesticides.
It is also used for bleaching pap .....
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Cloning
.... two new embryos (Lawren).
For it to get started into practice it took more than fifty years of
questioning and testing. The first successful cloning experiment involved a
leopard frog. It took place in, 1952 with group of scientist from the
Institute for Cancer Research in Philadelphia (Lawren). To clone the frog they
used an embryonic frog cell nucleus(Margery). 1962, John Gurdon of Cambridge
University cloned a toad that survive threw adulthood and was able to reproduce.
He was also the first to take a nucleus from a fully contrast tadpole intestinal
cell and cloned toads(Robertson). As you can see we are getting close t .....
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Cobalt
.... magnetic. One alloy, called Stellite, is an alloy of cobalt,
chromium, tungsten, and molybdenum. This alloy is extremely hard and keeps its
hardness at extreme temperatures. It has many uses: cutting tools are made of
it along with gas turbines. Zaire is the worldıs largest producer of cobalt
with 65% of the worldıs reserve.
Cobalt is a common trace element found in food. It is a component of
vitamin B12. It is important to our health. But excessive amounts may cause
nausea, damage to the heart, kidneys, and nerves, and even cause death.
I think that Cobalt is a neat element. Before I did this report I knew
nothing .....
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