Dalton was the first scientist to help contribute to the atomic theory. He based his thought process off of Democritus‚ an ancient Greek philosopher‚ who stated that at one point you will not be able to break down matter anymore‚ he called this basic building block an atom (meaning not divisible). Democritus believed that everything around us such as metal‚ water‚ and wood were atoms‚ but Dalton believed and proved that it could be more basic than that. He started thinking of compounds such as water
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formation of the atomic theory‚ it is believed that Dalton‚ Rutherford‚ Thompson‚ Bohr‚ and Planck are the five most influential. The research of this theory has gone on for many years and each and every one of them have brought us closer to our current understanding of the atom today. Each one of them played a special role in the development process of the atom and most importantly‚ they all reflected on one another. Many influential scientists follow up on one another proving their own theories correct
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and philosophers hundreds even thousands of years to come up with an accurate atomic theory. For nearly 2‚000 years science was unable to come up with experiments that were able to test and put forth the theories made up by Democritus which was a fifth century B.C. Greek philosopher. In 1803‚ John Dalton‚ who viewed the atom as a small solid sphere‚ and is credited for the developing of the first coherent atomic theory was now in the picture. This all led to the the first periodic table of the elements
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Thomson discovered the electron. He continued studying the atomic theory to come up with an improved atomic theory and “The Raisin Bun Theory.” Thomson’s atomic theory was that “matter is composed of atoms that contain electrons (negative particles) embedded in a positive material. The kind of element is characterized by the number of electrons in the atom.” Dalton is known as the one who developed the atomic theory and although some of his theories are proved false today‚ his “pioneer work” helped many
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The scientist we chose for our project is John Dalton. Who is John Dalton‚ you might ask? John Dalton was an English chemist‚ physicist‚ and meteorologist. He is best known for the discovery of the modern atomic theory. The rules for the atomic theory are that all matter is made up of tiny particles‚ or atoms‚ atoms are always invisible and indestructible‚ all atoms of a given element are identical in mass and properties‚ compounds are formed by a combination of two or more different kinds of atoms
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(estimated) in Abdera‚ Thrace. Democritus also known as the “Laughing Philosopher”. His theory was the matter could not be divided into smaller and smaller pieces forever‚ eventually the smallest possible piece would be obtained‚ and the piece would be invisible. He named the small piece of matter “atomos” meaning “not to be cut”. But as the time continued Aristotle‚ another Greek philosopher‚ thought that the atomic theory was worthless and then dismissed it. He on other hand‚ Aristotle was born in 384
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Greek word that means indivisible 2. Which of the following statements is part of Democritus’s theory about atoms? a. Atoms are the smallest piece of matter. 3. We know that Democritus was right about atoms. So why did people ignore Democritus’s ideas for such a long time? Democritus’s ideas were ignored for a long time because he had no proof of the atoms existence. Dalton Creates an Atomic Theory Based on Experiments 4. By conducting experiments and making observations‚ Dalton figured out that
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Ashley Buss Chemistry Mrs. Hyde 9/27/13 Aspect 1: Our class conducted 3 experiments to demonstrate‚ investigate and experimentally verify the Atomic Laws of Dalton’s Atomic Theory. In our first experiment‚ we measured the mass of 2 objects and then added them and measured the combined mass. We did this to learn about the Conservation of Mass. In our second experiment‚ we took 2 packages of Oreos (regular/double stuf). We weighed the mass to determine the ratio. We did this to model the Law
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|University of phoenix | |Erikson’s Timeline | | |October 7‚ 2012
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His theory stated that atoms were invisible and indestructible. Since Democritus did not really have that much technological support at the time‚ he could not elaborate on his suggestion. That’s where John Dalton came in…..2000 years later. Dalton used experimental methods to changed Democritus’s idea into a scientific theory. Dalton then began analyzing the ratios in which elements merge in chemical reactions. After doing several experiment‚ Dalton’s atomic theory was created. The
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