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11 Cards in this Set

  • Front
  • Back
Created law of conservation of mass
define law of conservation of mass
total mass remains constant during chemical reactions
Lavoisier found
law of conservation of mass
law of definite proportions
law of definite proportions found by
define law of constant composition
all samples of a compound have same composition: same proportions by mass of elements found inside
law of multiple proportions formed by
definition law of multiple proportions
masses of one element combine with fixed mass of another are in ration of small whole numbers.
Dalton's atomic theory (4)
1 all matter indivisible atoms
2 atoms of given element are alike in mass and other properties
3 compounds are formed when atoms of different elements unite in fixed proportions
4 chemical raction is just rearrangement, none created
3 subatomic particle
protons, neutrons, electrons
atoms of every element have
equal numbers