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9 Cards in this Set
- Front
- Back
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Daltons atomic theory |
-everything is made up of atoms -atoms in a particular element are identical to each other & can't be changed into atoms of another element -compounds are 2+ varying elements |
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Law of conservation of mass/ matter |
atoms cannot be destroyed in a chemical reaction |
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Law of multiple proportions |
Daltons prediction - elements that combine in different ways to form more than one compound must do so in ratios of whole #'s |
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Cathode ray tube |
high voltage, produces radiation from a negatively charged electrode |
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Millikan oil-drop experiment |
calculated mass of a single electron |
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Thompsons atomic modle |
(plumb pudding modle) electrons dotted like raisins in a + charged sphere |
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Rutherfords experiment |
disproved plumb pudding modle. discovered atoms are mostly empty space with a central nucleus surrounded by a cloud of electrons. |
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where are protons? |
nucleus |
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where are electrons? |
electron cloud |
