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

The atomic scheme has changed much since John Daltons time. In the tardy cardinal hundreds John Dalton first discover that elements combine in specific proportions because they atomic number 18 do of private atoms. For example, hydrogen and chlorine always combine in a specific proportion to create hydrochloric acid. Dalton thought that atoms were runty particles, like a small marble. Daltons atomic possible action consisted of tierce parts. They were: *All sum totals are made of atoms. Atoms are small particles that disregardnot be created, divided, or destroyed. *Atoms of the same substance are merely alike, atoms of different atoms are different. *Atoms join with separate atoms of other substances to ask sweet substances. Daltons possible action was proved wrong when new command was discovered and Daltons theory could not explain it. The atomic theory has evolved. In 1897, a scientist named J.J. Thompson found and identified a occupation in Daltons theory. He discovered that there were particles inner the atom. So, Thompson said, atoms can be divided into even smaller parts. The particles that were found inside the atom had a negative force. The negatively super supercharged particles were called electrons. Scientists had already found out that atoms had no overall charge. Thompson didnt have the location of the dictatorially charged material so he made a theory that the negatively charged electrons were introduce in the atom which was made of overall positive matter. Thompsons manakin was called the plum-pudding model. The electrons looked like plums that were in the pudding . In 1909, a unfearing named Ernest Rutheford, a former(prenominal) student of Thompson wishinged to investigate his former teachers theory. He aimed a small beam of radium particles at a distinguish end of thin gold foil.

He thought if atoms were scarce fragile blobs embedded with electrons like Thompson had suggested then the beam of... Your sample was decent; however, it left much to be desired. You could begin by decision common threads that strongly link the theories together, and providing roughly information on how the breakthrough was made along with scientific / numerical reasoning. In addition, your conclusion left the whole subject field coarse; whereas, it should have summed up your essay, without leaving questions about the way out itself dangling there. Though it should produce a desire to register much about the topic within the reader, it should not quit questions that do no merit (ie. how close are they to discovery?). If you want to get a full essay, order it on our website: OrderCustomPaper.com

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