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| Created 1st periodic table |
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| Came up with atomic theory |
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Invented the letter and subscript system for symbolizing elements, compounds, and molecules
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| Discovered Law of Conservation of Mass |
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| What are the vertical columns on the periodic table?: |
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| 2 things that elements have in common from the same column |
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Definition
1. similar properties
2. same number of electrons in outer shell |
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| number of atoms of each element |
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