12h 30min, jul 4, 1808 y - Dalton

Description:

2. Dalton - __Built upon Democritus's idea of the small particles that everything is composed of by creating 5 hypothetical rules for this particle. These included: First Elements are Composed of extremely small particles called atoms, Second All atoms within a Element are identical (False), Third Compounds are composed of atoms of more than one element. In any compound the ratio of the numbers of atoms of any two of the elements present is either an integer or a simple fraction, Fourth A chemical reaction involves only the separation, combination, or rearrangement of atoms; it does not result in their creation or destruction. (Semi False he believed that they could not be destroyed) __
a. Experimental basis - _Theory___
b. Laws that support - __Fourth Hypothesis is like
the law of conservation of mass
__Third is supported by Proust's law of definte proportions___
__Third is also a way of stating the law of multiple proportions_
c. Year - _1808__