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  • This Essay Explains the Evolution of the Atomic Theory and how It Has Changed over the Last Century or so

     

    Essays1 Physics

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ID number:140627
 
Evaluation:
Published: 06.06.2002.
Language: English
Level: Secondary school
Literature: n/a
References: Not used
Extract

The atomic theory has changed much since John Dalton's time. In the
late seventeen hundreds John Dalton first discovered that elements combine in specific proportions because they are made of individual atoms. For
example, hydrogen and chlorine always combine in a specific proportion to
create hydrochloric acid. Dalton thought that atoms were small particles, like a small marble. Dalton's atomic theory consisted of three parts. They were:
*All substances are made of atoms. Atoms are small particles that cannot be created, divided, or destroyed.

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