Physics And Physics : Atomic Theory

John Dalton wrote the modern atomic theory, a fundamental component of that is, the mole ratios of elements in a compound will be small whole numbers.

In this experiment, you will have a chance to test the hypothesis that Ernest Rutherford used when determining the size of the nucleus. In his "gold foil experiment," Rutherford shot alpha particles at gold atoms. Once he realized that the alpha particles were hitting a concentrated positive mass, he developed the nuclear model of the atom. Next, he set out to determine the relative size of the nucleus compared to the rest of the atom. He reasoned that the smaller the nucleus, the less likely it was to be hit by an alpha particle. This led to a simple comparative ratio:

  Then in 1661, Irish chemist Robert Boyle supported the philosophers’ theory of how chemical elements are made up of the simplest matter, backing the theory of how matter makes up all life and is the smallest living thing (Doc. 1). But a bombshell happened in 1803 when John Dalton backed up all three theories by discovering that atoms make up all matter, and chemical compounds are made of atoms (OI).

Around 2,500 years ago, Democritus and his partner Leucippus were the first ones to develop the atomic theory in written history. Their theory proposed that every kind of matter was made up of tiny particles, which were named atomos, which means that it is indivisible. This meant that Democritus and Leucippus thought there were little particles of everything, but, the next breakthrough in atomic theory wasn’t made until the early 1800s with a french chemist by the name of Antoine Lavoisier, he was the one who came up with the idea of the law of the conservation of mass, which states that matter stays the same even when it changes shape or form. Then, James Dalton said that all matter was made up of atoms, which were indivisible, and unbreakable.

The second main contributor toward the atomic structure was John Dalton. John Dalton was the one who brought the atomic theory talk back into play after 2000 years from Democritus. Dalton become fond of the atomic structure following his love from meteorology. He claimed that the forces of repulsion that caused pressure only were between the same atoms and the atoms inside a mixture had different weights and complexity. He then decided to calculate the atomic weights by determining the percentages of each composition in a compound. This allowed him to be able to

Within the last hundred years, the atomic model gone through dramatic changes allowing to apply the knowledge of matter understanding at atomic level into different industries like medicine such as MRI and X-Ray. This knowledge allowed doctors to treat, diagnose and certainly save millions of people throughout the years, which could not have been done without research being done on the structure of the atom funded continuously for these scientists to find more application which benefit people and comprehend the world we live in on an atomic level.

Around 1803 John Dalton, an English chemist developed the first useful atomic theory of matter. Amedeo Avogadro, the Italian chemist in 1811 published an article drawing the distinction between the atom and the molecule, which now is known as “Avogadro’s

At the beginning of the twentieth century a scientist called Albert Einstein had a special theory about atoms. His theory was that atoms had a lot of energy locked within them. After this theory was published scientists worked hard to prove that this theory was true. After thirty years of experiments they discovered that within the nucleus there is a lot of energy and splitting the atom would release it.

Atomic energy re-invigorated technological and scientific purpose of the early 20th century. Augmenting knowledge through scientific inquiry motivated researchers and academics to collaborate in labs and conferences in developing an emerging field. As discoveries dotted the path to scientific self-indulgence, the purported results of the research which was often purely coincidental, was promoted as yielding untold benefits to society. Medicine would be radically transformed and the scarcity of energy to fuel engines of economic growth would be a thing of the past (De Groot, Steg & Poortinga, 2013). The marvels of the atomic age, it seemed, would become the Holy Grail that would breathe renewed life to human progress.

He said that elements consisted of identical atoms that had the same mass and that compounds were atoms from different elements combined together. (The Doc.2014)

Aristotle was a Greek philosopher, believed there were only 4 elements; fire, water, air, and Earth. This idea was widely accepted for 2,000 years. Antoine Lavoisier is considered “father of modern chemistry” although he made a living as a tax collector. His view of having only 4 elements being the basis of the material world helped influence “alchemists”.

The Discovery of the Atom first came from the Greeks which made a theory “The idea that all matter is made up of tiny, indivisible particles, or atoms, is believed to have originated with the Greek philosopher Leucippus of Miletus and his student Democritus of Abdera in the 5th century B.C. (The word atom comes from the Greek word atomos, which means “indivisible.”)” (InfoPlease Atomic theory)

Dalton’s Atomic Theory has changed chemistry for the better. Without his research, the world would probably be different today. “The splitting of the atom in the 20th century could most likely not have been accomplished without Dalton laying the foundation of knowledge about the atomic makeup of simple and complex molecules.” Dalton’s discovery has allowed mankind to manufacture chemical compounds with the correct proportions of different elements for certain compounds. Because of his theory, humans are able to make the right medicines to cure people from sickness. His discovery has taken the knowledge of mankind to the next level.

Around 400 BCE was when the Greek philosopher Democritus, alone with his teacher Leucippus, the idea of the atom was born (the word atom comes from the Greek word “atomos” or “atomon” meaning “that which cannot be split”). This was a completely new concept, and Democritus’s theory stated that atoms were indestructible and homogenous, and different states of matter were made up of differently shaped atoms: solids had sharp and pointy atoms and liquids had large round atoms. Later these ideas would be proved inaccurate, however, this was the beginning of the discovery of the atom even though the people of this time had no instruments capable of testing the theory.

Nearly every aspect of modern life is affected by one of the largest (or technically smallest) discoveries of all time: the atom. The long process of solving the mysteries of matter has involved numerous scientists and their experiments, which have ushered in modern knowledge of the subject and countless innovations in science using the knowledge of matter 's properties. The atom makes up nearly everything humankind knows of; therefore, it has significant effect on everything people make. The discovery of the atom by John Dalton and the discovery of the electron by J.J. Thomson have changed the way people use science; by examining the mysteries of matter on a more fundamental level, the discoveries made by these men have opened the path to new and useful technologies, such as telephones and computers.