Essays Tagged: "atoms"

Creation and the Cosmos.

d the red. That is it's wavelength was longer than that of the light emitted from the corresponding atoms in the lab. Furthermore he found that the farther away the galaxy was the more it was shifted ... universe was about 500,000 years old, about 14,999,500,000 years ago. After 500,000 years permanent atoms started to form. Before 500,000 years matter existed as loose electrons and nuclei in a state ...

(2 pages) 64 0 4.4 Dec/1995

Subjects: Science Essays > Physics

Nuclear Energy

center, or nucleus of an atom. This energy is also known as atomic energy because its obtained from atoms, unfortunately this is not a good choice of words (because many other energies are obtained fr ... f an atomic bomb at Bikini during 1946. This powerful type of energy comes from many things such as atoms and subatomic particles; an atom is a tiny bit of matter that has very little weight. They are ...

(4 pages) 232 5 4.0 Nov/1996

Subjects: Science Essays > Physics

Nucelar Energy

avy water--that slows down the neutrons so that they may be more easily captured by the fissionable atoms; and (3) a cooling system that extracts the heat energy produced. The fuel is sometimes enrich ... of neutron capture. The breeder reactor is a special type of reactor that produces more fissionable atoms than it consumes by using surplus neutrons to transmute certain nonfissionable atoms into fiss ...

(1 pages) 45 0 5.0 Jan/1996

Subjects: Science Essays > Physics

Nuclear activities in todays world.

years of world war 2.Many sicentists and physicists acrostthe globe were experimenting withspliting atoms and the sort. When theydiscoverd that by bombarding a uraniumatom with neutrons it would split ... m engine, but instead of burningconvention coal or wood, it used the heatcreated by fussing uranium atoms. The reasonwhy the steam created directly from the watertouching the uranium rods in the core ...

(2 pages) 82 1 3.5 Apr/2002

Subjects: Science Essays > Physics

Freewill and determinism conflict (choice)

ld be able to comprehend the motions of the largest bodies in the universeand those of the smallest atoms in a single formula - provided that it was sufficiently powerful tosubmit all these data analy ...

(4 pages) 267 0 3.0 Jan/1996

Subjects: Humanities Essays > Philosophy

IB Chemistry - Intermolecular Bonding Essay:

and the evidence for the existence of each. Comment on their strengths in relation to the types of atoms involved; the covalent bond and relative to each other. Use the concepts of different types an ... ions. The tendency for these ions to be formed by elements is corespondent to the octet rule, when atoms react,, they tend to do so in such a way that they attain an outer shell containing eight elec ...

(6 pages) 89 0 4.3 Jan/1997

Subjects: Science Essays > Chemistry

Nuclear Power

om a nuclear power plant is very complicated. The process of nuclear energy involves the fission of atoms, the release of energy from fission as heat, and the transfer of heat to electricity in power ... of splitting the atom is called nuclear fission. Fission can take place in many different kinds of atoms. This explanation uses Uranium - 235, the atom most commonly used in nuclear reactors. The Ura ...

(5 pages) 101 0 3.6 May/1996

Subjects: Science Essays > Physics

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

n first discovered that elements combinein specific proportions because they are made of individual atoms. Forexample, hydrogen and chlorine always combine in a specific proportion tocreate hydrochlor ... nd chlorine always combine in a specific proportion tocreate hydrochloric acid. Dalton thought that atoms were small particles,like a small marble. Dalton's atomic theory consisted of three parts. The ...

(2 pages) 48 1 3.0 Jun/2002

Subjects: Science Essays

Fission or Fusion

, from the split nuclei. The neutrons released in this manner quickly cause the fission of two more atoms, thereby releasing four or more additional neutrons and initiating a self-sustaining series of ... conversion to electricity.At temperatures of even 100,000° C (180,000° F), all the hydrogen atoms are fully ionized. The gas consists of an electrically neutral assemblage of positively charge ...

(5 pages) 51 0 4.5 Mar/1997

Subjects: Science Essays > Physics


ic transmission is very simple tounderstand. The wire that conducts the electric current is made of atomswhich have equal numbers of protons and electrons making the atomselectrically neutral. If this ... making the atomselectrically neutral. If this balance is disturbed by gain or loss of electrons,the atoms will become electrically charged and are called ions. Electronsoccupy energy states. Each leve ...

(6 pages) 72 0 3.4 Mar/1997

Subjects: Science Essays > Physics

Electric Charge and the Electrical Structure of Matter

mple Model of the Structure of Matter1. All matter is composed of sub-microscopic particles, called atoms.2. Electric charges are carried by particles within each atom that are called electrons and pr ... es, yet each of them carries a negative electric charge equal in magnitude to that of the proton.5. Atoms are normally electrically neutral, because the number of positive protons in the nucleus is eq ...

(7 pages) 70 0 4.3 Dec/1996

Subjects: Science Essays > Physics


t structure. They are the particles that make up protons and neutrons, which make up the nucleus of atoms. Also, particles that interact by means of the strong force, the force that holds parts of the ...

(2 pages) 36 0 4.5 Jan/1996

Subjects: Science Essays > Physics

How Albert Einstein's Knowledge Aided Civilization

verage citizen. Albert Einstein helped Oppenheimer1 develop the fundamental science needed to break atoms, causing massive amounts of energy to be released. There are two common forms of this technolo ...

(3 pages) 67 0 4.6 Oct/1996

Subjects: Science Essays > Physics

An experiment to investigate the factors which affect the resistance in a wire.

acceleration (Ee/m). This is because they repeatedly collide with the moderately massive vibrating atoms losing their kinetic energy. The vibrating atoms having gained this kinetic energy now vibrate ... fore fewer electrons are able to flow than in a shorter length wire. This is because there are more atoms from the metal so there is more chance that the electrons would collide with one of the atoms ...

(7 pages) 90 0 5.0 Jan/2003

Subjects: Science Essays > Physics

Describes in simple terms the problems facing the ozone layer, including the problem of CPC's and the emergence of a "hole"---includes bibliography

discussed.While ozone is a gas made of the same atom as oxygen, it has a different number of these atoms, altering its physical characteristics slightly. For example, ozone has a very pungent smell a ... emingly an ideal compound. However, they begin to create a problem when they release their chlorine atoms. This process occurs as they reach the stratosphere, which is the only place this reaction can ...

(8 pages) 87 1 5.0 Mar/2003

Subjects: Science Essays > Atmospheric Sciences

Timeline of Elements?

ce that would change common metals to gold or silver.*442 BC: Democritus came up with the theory of atoms, and also he stated that the universe is made up of empty space and that all matter is compose ... e stated that the universe is made up of empty space and that all matter is composed of indivisible atoms.*384 - 322 BC: Aristotle developed techniques for gathering scientific facts. His progress pro ...

(2 pages) 34 0 3.0 Mar/2003

Subjects: Science Essays > Chemistry

Electric charge and static electricity.

ctrons. Protons are bound tightly in the center of an atom, but electrons can sometimes leave their atoms. The two types of charges interact in specific ways. Charges that are the same repels each oth ...

(2 pages) 44 0 3.3 Apr/2003

Subjects: Science Essays > Physics

Three Mile Island Accident(Nuclear Fission)

actions that are made. The other reaction is called fusion, or the combining of nuclei. In fission, atoms are split apart to make energy. This fission produces power, heat, and electricity. In a nucle ...

(4 pages) 78 0 4.0 Apr/2003

Subjects: Science Essays > Chemistry

Sir Isaac Newton and his accomplishments with math and sciences.

tomists and the theory that all things in nature were made up of particles of matter, also known as atoms. He then returned to Woolsthorpe and continued to study light, gravity and mathematics. These ...

(2 pages) 139 4 5.0 May/2003

Subjects: Science Essays > Mathematics

Outline for Dalton and his work in Chem(outline only).

pressures of the component gasesDalton's Atomic Theory*Matter consists of definite particles called atoms.*Atoms are indestructible. In chemical reactions, the atoms rearrange but they do not themselv ... estructible. In chemical reactions, the atoms rearrange but they do not themselves break apart.*The atoms of one particular element are all identical in mass and other properties.*The atoms of one par ...

(3 pages) 66 1 3.0 May/2003

Subjects: Science Essays > Chemistry