Essays Tagged: "Atomic theory"

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

The atomic theory has changed much since John Dalton's time. In thelate seventeen hundreds John Dalton f ... ate hydrochloric acid. Dalton thought that atoms were small particles,like a small marble. Dalton's atomic theory consisted of three parts. Theywere:*All substances are made of atoms. Atoms are small ... y was proved wrong when new information was discoveredand Dalton's theory could not explain it. The atomic theory has evolved.In 1897, a scientist named J.J. Thompson found and identified aproblem in ...

(2 pages) 48 1 3.0 Jun/2002

Subjects: Science Essays

The Orgins of Atomic Theory

The Orgins ofAtomic TheoryBy Levi PulkkinenThere is an eternal human compulsion to unlock the mysteries of our li ... improve ourselves. The Greeks created this guiding principle more than two thousand years ago.Greek atomic theory was not the work of a single person, in fact it was a product of many great minds. The ... are composed of smaller particles. Democritus took this idea and ran with it, developing the first atomic theory. Democritus¹ theory contained four basic ideas: matter is made up of indivisible ...

(7 pages) 63 0 3.0 Nov/1996

Subjects: Humanities Essays > Philosophy

A biography of Democritus of Abdera from the Hellenistic Age. It has atomic theory in it and Democritus' reasoning and acomplishments and basically his life.

en about the most. Democritus had one very important and very interesting theory. It was called the atomic theory. Democritus explained his theory very well. Domocritus' hypothesis was that all matter ... known of what all things are made up of.. Although Democritus was not the first one to propose the atomic theory, but he has a lot of credit for describing it better, giving all of the details that w ...

(3 pages) 46 1 3.5 Jan/2003

Subjects: Humanities Essays > Philosophy > Classical Philosophy

Timeline of Elements?

n them. The formula for this is F= Q1*Q2/r"*1803: John Dalton, an English chemist, who proposed the Atomic Theory that all matter was composed of tiny indivisible particles known as atoms. These atoms ... nergy, a photon, in the form of light.*1925- Geiger confirmed that energy and mass are preserved in atomic processes.*1926- Erwin Schroedinger developed wave mechanics which describe the behavior of q ...

(2 pages) 34 0 3.0 Mar/2003

Subjects: Science Essays > Chemistry

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

from the Royal Society*Cofounder of the British association for the advancement of science*Dalton's Atomic Theory, Dalton's Law of Partial Pressures*Dalton's law of partial pressure is defined as the ... e of a mixture of gases is equal to the sum of the partial pressures of the component gasesDalton's Atomic Theory*Matter consists of definite particles called atoms.*Atoms are indestructible. In chemi ...

(3 pages) 66 1 3.0 May/2003

Subjects: Science Essays > Chemistry

Dalton's Atomic Theory.

Dalton's Atomic TheoryToday, John Dalton is one of the most well known scientists from the 1800's. In additio ... of the most well known scientists from the 1800's. In addition to proposing an accurate three-part atomic theory, he also discovered colour blindness and made many important observations about the ch ... d the Law of Multiple Proportions, which was later verified by Berzelius.Dalton formed his complete atomic theory in attempt to explain how and why elements combine in fixed ratios or multiples of tho ...

(2 pages) 81 3 4.9 Jan/2004

Subjects: Science Essays > Chemistry

The history of the atomic theory. This essay discusses Aristotle, Democritus and Alchemy.

DemocritusDemocratus is credited for being one of the earliest known pioneers of Atomic Theory, living around 460 B.C. The scientist thought up a revolutionary and puzzling question ...

(3 pages) 23 0 0.0 May/2004

Subjects: Science Essays > Chemistry

History of Atomic Theory

exhibit repelling and attracting forces on each other, depending on distance. John Dalton used the atomic theory to explain why gases always combine in simple ratios. It was with Amedeo Avogadro's wo ... ish atoms and molecules. In modern times atoms have been observed experimentally.A BRIEF HISTORY OF ATOMIC THEORY DEVELOPMENTYear Milestone Scientist(s)~400 BC The first cohere ...

(2 pages) 17 0 3.0 Mar/2005

Subjects: Science Essays > Chemistry


I believe that the least remarkable of Democritus' very great contributions was his "atomic theory", which was basically accepted by modern science 2000 years later (with some refinemen ... basically accepted by modern science 2000 years later (with some refinement and modification). His atomic theory was naturally highly suggestive of some quantum phenomena also. The most remarkable th ... rally highly suggestive of some quantum phenomena also. The most remarkable thing about Democritus' Atomic Theory was that he devised it by violating every major principle of modern science, especiall ...

(1 pages) 1215 0 5.0 Sep/2005

Subjects: Science Essays > Physics

Biography on John Dalton

John Dalton an English chemist and physicist, was known to us for his atomic theory. Born in 1766, September, and taught by his father. He started teaching people at the ... he studied mathematics and natural philosophy at the Manchester Academy. At 1800, he published his atomic theory, explaining how and why elements would combine with one another in fixed ratios and so ...

(1 pages) 22 0 3.7 Nov/2006

Subjects: Science Essays > Chemistry

Atomic Theory

*History of Atomic Theory- DemocritusThe theory of atoms began with a Greek philosopher called Democritus who li ... opher called Democritus who lived in the 5th century BC. Democritus was not the first to develop an atomic theory but he produced a much more elaborate and systematic view of the physical world than h ... to explain the whole of physics with only the basis of Democritus' philosophical ideas.*The Modern Atomic TheoryIn 1803, British chemist John Dalton developed the first useful atomic theory of matter ...

(4 pages) 32 0 4.0 Feb/2007

Subjects: Science Essays > Chemistry

Industrial Age

nd discoveries were being stumbled upon, but scientific theories as well. John Dalton developed the Atomic Theory, the theory that states the fundamental rules which modern chemistry is based upon. Dm ...

(2 pages) 13 0 0.0 Apr/2001

Subjects: Businesss Research Papers

Atomic Enegy

he atom and its mysteries have been on the mind of scientists and man since Dalton came up with the Atomic Theory in the early 19th century. To get in perspective the size of the atom and its n ... neutron would release an awesome amount of energy, therefore creating the destructive power of the atomic bomb. In the early morning of August the sixth, 1945, a message was sent to the B-29 E ...

(6 pages) 25 0 5.0 May/2001

Subjects: Science Essays > Chemistry

The Atomic Theory

The Atomic Theory In this report I will give a history on the development of the atomic theory. I will c ... velopment of the atomic theory. I will cover some of the most important dates in the development of atomic theory.An atom was first thought of by the Ancient Greeks who believed that matter was made o ... lements. The name they gave to these particles was the atom.In 1776 the man known as "The Father of Atomic Theory", John Dalton was born in England. He is known as the father of atomic theory because ...

(2 pages) 1116 0 0.0 Feb/2008

Subjects: Science Essays > Chemistry

The Development of The Atom

y went through a long process over thousands of years to finally get what we now call Dalton’s atomic theory. Even later there is more learned about atoms. It started all the way back in about 40 ... s’s ideas on atoms into scientific theory. Based on the results Dalton developed Dalton’s atomic theory. This said that all elements are composed of tiny invisible particles called atoms, ea ...

(2 pages) 14 0 0.0 Sep/2008

Subjects: Science Essays > Chemistry

Eat, Drink, and Be Merry, For Tomorrow You Die.

y of philosophy by developing his psychological and ethical theory of happiness and his view on the atomic theory, among other things. He taught that death is the end of the body and the soul and cons ...

(3 pages) 15 0 3.0 Oct/2008

Subjects: Humanities Essays > Philosophy

History Time line of the Atom

rent elements combine in simple whole numbers to form compounds.-It was not until 1850 that another atomic theory was proposed. Dalton stated that all matter is made of indivisible and indestructible ... it quantum mechanics. Therefore, in quantum mechanics, there is not an electron circling aroung the atomic nucleus, but rather an electron orbital (an 'electron cloud') giving the distribution of the ...

(6 pages) 20 0 5.0 Jan/2009

Subjects: Science Essays > Chemistry

Chemistry Study Notes - Atomic Emission Spectra

Theme: Atomic Emission SpectraThe entire visible spectrum is presented in white light and can be separated ... each of its wavelengths and frequencies by a prism (diffraction gratings)Atom absorbs light --> Atomic Emission Spectra-pass electricity through gases in tubes causes them to emit light-electrons ... otoelectric effect (it wasn’t enough energy to remove them from the pull from the nucleus)-the atomic state is unstable and electrons return to original places, closer to the nucleus-when they do ...

(2 pages) 11 1 3.0 Mar/2009

Subjects: Science Essays > Chemistry

Atomic Theory

1.Democritus: Greek philosopher, a central figure in the development of the atomic theory of the universe. Democritus' knowledge is largely limited to untrustworthy tradition. ... parabolas of deflection. Thomson concluded that the neon gas was composed of atoms of two different atomic masses (neon-20 and neon-22).6.Earnest Rutherford: Earnest Rutherford was a New Zealand born ... e another. Mendeleev's table consisted of about half of the known elements listed in order of their atomic weight and demonstrated periodic valence changes as a function of atomic weight. In 1868, Mey ...

(5 pages) 15 0 1.0 Mar/2009

Subjects: Science Essays > Earth Sciences

Atomic Theory Research Paper

Of all of the many scientists who played a major role in the formation of the atomic theory, it is believed that Dalton, Rutherford, Thompson, Bohr, and Planck are the five most ... icture.John Dalton (1766-1844), is one of the most influential scientists in the development of the atomic theory. Democritus first suggested the existence of the atom, but it took nearly two millenni ... atom, but it took nearly two millennia before Dalton took the research into his own hands. Dalton's Atomic Theory consists of basic concepts based on the theory that atoms of different elements could ...

(7 pages) 21 0 5.0 Dec/2009

Subjects: Science Essays > Biology