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stated that the total mass in a reaction remains the same
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Specific substances allways had the same ratio by mass
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under constant conditions the volumes of reacting gases and gaseous products are in the ratio of small numbers
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His theroy
-All matter is made of atoms. Atoms are not breakable
-All atoms of a given element are identical
-Compounds are formed by a combination of two or more different kinds of atoms.
- A chemical reaction is a rearrangement of atoms. -
proposed that equal volumes of two diffrent gasses at equal temperature and pressure will have the same number of particles.
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Robert Brown discovered the Brownian motion by looking at dust grains floating in water through a microscope
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Johann Josef Loschmidt discovered the size of the atoms in the air
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He published the first periodic table.
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Said the brownian motion was caused by the thermal motion of water molecules
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J. J. Tomson discovered that cathode rays were made of electrons and he figured the ratio of an electrons charge to its mass
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Sir Rutherford bombarded a sheet of gold with alpha rays and found that a small amount of these beams were deflected and he sermized that the atom was mostly made up of empty space
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obtained accurate measure of an elecrton's charge
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discovered that there were more than one type of atom at each position on the periodic table.
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the electrons were confined into orbits, and could jump between these orbits but not without absorbing energy
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He found that there were high energy particles with no charge and they had relativly the same mass as the protron
