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Sir Humphrey Davy Mattiessen Isolated Larger Lithium
426 words
Lithium, which is represented by the symbolic
notation, Li, is the third element on the periodic
table. The mineral Petalite (which contains
lithium) was discovered by the Brazilian scientist
Jos Bonifcio de Andrada e Silva towards the end of
the 18 th century while visiting Sweden. Lithium
was discovered by Johan August Arfvedson in 1817
during an analysis of Petalite ore. Arfvedson
subsequently discovered lithium in the minerals
spodumene and lepidolite. C. G. Gmelin observed in
1818 that lith...
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Lieutenant Jimmy Cross Ted Lavender
1,743 words
... es of ammunition. You want my opinion,
Mitchell Sanders said, there's a definite moral
here. He put his hand oil the dead boy's wrist. He
was quiet for a time, as if counting a pulse, then
he patted the stomach, almost affectionately, and
used Kiowa's hunting hatchet to remove the thumb.
Henry Dobbins asked what the moral was. Moral? You
know- Moral. Sanders wrapped the thumb in toilet
paper and handed it across to Norman Bowker. There
was no blood. Smiling, he kicked the boy's head,
watched...
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Parts Per Million Degrees Centigrade
410 words
Uranium is a silvery-white element possessing a
very radioactive and oxidizing character. Uranium
retains a density of 19. 07 grams per cubic
centimeter and a melting point of roughly 1, 132
degrees centigrade. With a boiling point of
approximately 3, 818 degrees Celsius uranium is
not an easy element to get to a melting or boiling
point. The Periodic Table says that uranium has 92
protons and 146 neutrons thereby acquiring a
atomic weight of 238 atomic mass units. Uranium
burns readily in air a...
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Ecology The Study Of Plans Animals And Environment
1,192 words
... ugh the changes occur gradually. Eventually a
point is reached at which the environmental and
species changes are minimal and species diversity
is high. This relatively stable community is
called a CLIMAX COMMUNITY. ECOSYSTEMS Many
ecologists study communities in the context of an
ecosystem, which includes interactions involving
mineral cycling, energy flow, and population
control. The study of ecosystems facilitates a
functional approach to ecology. One of the major
aims of ecological resea...
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Fossil Fuels Alternative Energy
511 words
Alternative Energy resources are becoming a much
bigger deal as the level of fossil fuels remaining
on earth slowly depreciates. Another issue is
pollution. Eventually we wont be able to use gas
and oil in our cars they will run solely on
something like solar energy. Things like
Hydroelectric power have been around for many many
years, just not with such magnitude or demand.
There are four main kinds of alternative energy
sources, they are: Solar Energy Solar energy is
used to do various things....
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Starter Cultures Enzymes Skimmed Cow Milk Cheese
626 words
Place of Origin: Although snack-size sticks of
mozzarella are now sold under this name, true
string cheese originated in Syria, and often comes
in a braided rope. The flavor is similar to
mozzarella, but saltier. Ingredients: String
cheese is usually made from Mozzarella cheese. The
ingredients used to make Mozzarella cheese
consists of: pasteurized part-skimmed cow's milk
with starter cultures, enzymes, and salt. It can
also come in smoked and unmoved versions, often
with garlic and onion added...
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Lay Their Eggs Frogs And Toads Frog
994 words
Frog is the common name for a species of amphibian
that also includes toads. A very common question
is "whats the difference between frogs and toads?"
, the answer: none, except for the fact that toads
lack the powerful legs that frogs have. "Where can
frogs and toads be found?" , one might ask. They
live in all parts of the world, except for
Antarctica, but are mostly found in tropical
areas. Frogs are small animals with smooth moist
skin, and big eyes that can see in almost any
direction. Most...
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Gas And Dust Nuclear Fusion
991 words
An Introduction to World History. "Any scientist,
I think, will agree that in a hundred years time,
many of the details of the story we tell now may
look kind of cute and naive, because well have
moved on beyond them. But if you happen to live
now, " he concludes, "this is the best story
going. " said David Christians and it is really
true. We lived in a beautiful world but dont know
a lot about cosmology, geology, archeology, and
population and environmental studies. Today with
the help of Davi...
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Friction At The Atomic Scale
1,010 words
Friction at the atomic scale. From the article
"Friction at the Atomic Scale" by Jacqueline Krim
we learn that standard friction and friction at
the atomic scale are quite different. In my
summary paper I would like to try to explain that
fact based on the article. Having used different
apparatus, the scientists made an experiment to
prove that physicists didnt pay enough attention
to the study of frictions atomic level or nano
tribology for a long time wrongly. However now it
was determined tha...
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Hydrogen Bonds Hydrogen Ions
1,205 words
Properties of Water Water is essential for life as
we know it on earth. It is used by plants and
animals for basic biological processes which would
be impossible without the use of water. The origin
of all life can be traced back to the water in the
Earths precambrian seas. Water is also the
universal solvent. It reacts with more elements
and compounds than any other substance known to
man. Water is a polar molecule made up of on atom
of hydrogen and two atoms of oxygen. It is
attracted to itsel...
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Life On Earth B And C
1,459 words
Carbon dioxide is a colorless, odorless,
non-toxic, and slightly acid-tasting gas.
Sometimes referred to as a carbonic acid gas, the
molecule consists of one atom of carbon joined to
two atoms of oxygen. It occurs naturally in the
atmospheres of many planets, including that of
earth. Carbon dioxide is uniformly distributed
over the earths surface at a concentration of
about 0. 033 %, or 330 parts per million. It was
called fixed air by the Scottish chemist and
physician Joseph Black in the 1750 ...
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Chang Lin Tien Lin Tien University
339 words
Chang-Lin Tien I am doing my extra credit paper on
Chang-Lin Tien. He is a professor of engineering
at U. C. Berkeley. He is the first Asian American
to hold a major research position at a University
in the United States. Dr. Tien was born in Wuhan,
China and was educated in Shanghai and Taiwan. He
completed his undergraduate education at the
National Taiwan University. He then came to the
United States in 1956, where he earned a masters
degree at the University of Louisville in 1957. He
then ea...
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Chemical Reactions Three Types
890 words
Chemical Chemical Reactions CHEMICAL REACTIONS
Chemical reactions are the heart of chemistry.
People have always known that they exist. The
Ancient Greeks were the firsts to speculate on the
composition of matter. They thought that it was
possible that individual particles made up matter.
Later, in the Seventeenth Century, a German
chemist named George Ernst Stahl was the first to
speak of chemical reaction, specifically,
combustion. He said that a substance called
phlogiston escaped into the ai...
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Formula For Silver Oxide 1 75 Grams Crucible
282 words
Sliver Oxide Lab Purpose: To find the chemical
formula for Silver Oxide and to improve students
skills with lab equipment. Hazards:
Heat/FlameMidly hazardous chemicals Materials:
Small Crucible and means of suspending it above a
flameBunson Burner Accurate scale in
gramsTongsProcedure: Place the crucible on your
scale and record its weight when empty. Next,
place approximately 1. 75 grams of silver oxide
into the crucible, you do not have to be exactly
on 1. 75 grams, but being within a tenth of...
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Dust Particles Solar System
1,011 words
Neptune is the Neptune Neptune Neptune is the
outermost planet of the gas giants. It has an
equatorial diameter of 49, 500 kilometers (30, 760
miles) and is the eighth planet from the sun. If
Neptune were hollow, it could contain nearly 60
Earths. Neptune orbits the Sun every 165 years. It
has eight moons, six of which were found by
Voyager 2. A day on Neptune is 16 hours and 6. 7
minutes. Neptune was discovered on September 23,
1846 by Johann Gottfried Galle, of the Berlin
Observatory. Neptune ...
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External Objects Material Objects
784 words
Descartes is famed by is familiar notion, I think
therefore I am (Cogito, ergo sum. ). It is a
conclusion he has reached in his second meditation
after much deliberation on the existence of
anything certain. After he discovers his ability
to doubt and to understand, he is able to
substantiate his necessary existence as a
consequence. What we doubt or understand may not
ultimately correspond, but we can never be
uncertain that we are in the process of thought.
This idea is a major component in De...
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Natural Born Killers Effects Of Television Violence
911 words
A Threat to Our Society Violence is everywhere in
our society today. It is in the sports we watch,
the schools we attend, and even in many of our
personal and domestic relationships. The question
then becomes: what is causing all of this
violence? Certainly, there are a number of factors
and the blame cannot be pinned on one source. One
factor which must be examined, however, is the
media and its influence on young people. Several
incidents have occurred which prove, at the very
least, that medi...
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Anna Maria Napoleon Bonaparte
1,765 words
The portrait. A single person immortalized forever
on canvas. At first glance, you only see the
subject. With a more analytical eye, though, you
not only see the image but you begin to hear the
voice of the painter and of his time. This is what
I hope to do, to feel and understand the mind of
the painter Ingres when he painted Louis-Francois
Bertin and Reynolds when he painted General John
Burgoyne. In the portrait of Bertin, Ingres has
captured on canvas a man who has never been
pampered in his...
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B And C Second Largest
384 words
Saturn is the second largest planet and sixth from
the sun. Saturn is most known for its rings, first
seen in 1610 by Italian scientist Galileo and
identified as rings by Dutch astronomer Christian
Huygens in 1655. The rings consist greater than
100, 000 single ringlets. It is the most oblate
planet because of the rapid rotation of the
planet, which flattens Saturn at the poles by
about 10 %. Its composition is mostly composed of
hydrogen and helium. It is mostly liquid, with a
small rocky core ...
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Igor Stravinsky And Coco Chanel Rite Of Spring First
981 words
Revolutions in the heart Coco and Igor by Chris
Greenhalgh 311 pp, Review People punched each
other at the premiere of the Rite of Spring. Maybe
it was the heat in the packed Th 233; tre des
Champs 201; lys 233; es on the warm, Spring
evening of May 29 1913. Maybe it was the primal,
groin-thrusting immodesty of Nijinskys
choreography. But the raw, rhythmic violence of
Stravinsky's score soon spilled over into the
auditorium, inciting the detractors and defenders
of this epoch-making music...
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