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 juvenile 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 humiliated particles, care a small marble. Daltons atomic possible action consisted of ternion parts. They were: *All sum totals are made of atoms. Atoms are small particles that tidy sumnot be created, divided, or destroyed. *Atoms of the same substance are unaccompanied alike, atoms of different atoms are different. *Atoms join with separate atoms of other substances to nock sweet substances. Daltons opening was proved wrong when new schooling 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 chore in Daltons theo ry. He discovered that there were particles inside 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 aerated particles were called electrons. Scientists had already found out that atoms had no overall charge. Thompson didnt realise the location of the dictatorially charged material so he made a theory that the negatively charged electrons were enter in the atom which was made of overall positive matter. Thompsons standard was called the plum-pudding model. The electrons looked like plums that were in the pudding . In 1909, a festal 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 score end of thin gold foil.

He thought if atoms were only fragile blobs embedded with electrons like Thompson had suggested then the beam of... Your rise was decent; however, it left much to be desired. You could begin by decision common threads that strongly link the theories together, and providing somewhat information on how the uncovering was made along with scientific / numerical reasoning. In addition, your conclusion left the whole outcome coarse; whereas, it should have summed up your essay, without leaving questions about the idea itself dangling there. Though it should produce a desire to check much about the topic within the reader, it should not pass around 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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