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The mass of a isolated system will remain constant overtime.
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It was denied by many scientist at the time but in todays world it is a very easy process scientist use.
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Thoughts became scientific method used today.
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If two elements came together form more than one compound, then the ratios of the masses of the second element which combine with a fixed mass of the first element will make the ratio smaller
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indistructible andcan change shapes and sizes. bounce off eah other often forming clusters with different arrangments.
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Dicscovered that tis can cause bad things to happen to people if they are around it alot.
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Did four Experiments on the magnetic deflection of cathode rays, Experiment to show that cathode rays were electrically charged, Experiment to show that cathode rays could be deflected electrically, and Experiment to measure the mass to charge ratio of cathode rays. All later influenced scientist.
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Discovered that electron can transfer energy and is now used as a component of a molecule.
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polonium can be used to heat spaceships, but it is unstable as all isotopes and radioactive. Radium is found in uranium ore. Important because we use these elements today.
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