John+Dalton+A3

JOHN DALTON

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ATOMIC THEORY:__
 * elements consisted of tiny particles called atoms
 * all atoms of an element have the same mass
 * the way atoms differed was because they had different masses
 * compounds consisted of atoms of different elements combined together
 * chemical reactions involved the rearrangement of combinations of those atoms.


 * __Understanding__: In an attempt to explain how and why elements would combine with one another in fixed ratios and sometimes also in multiples of those ratios, Dalton formulated his atomic theory.

One problem with his model is that it doesnt show that atoms can be destroyed by nuclear reactions and //__ NOT __// by chemical reactions.**