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7 Cards in this Set
- Front
- Back
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Paracelsus |
An alchemist. Thought that male, surfer and female, mercury were not the only ones. He added salt because there needed to be three to match with the trinity. He treated patients with one of the three of the trinity because he thought illness came from an imbalance of one of these. |
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Boyle |
Broke from alchemy and started chemistry. He said that elements were things that couldn't be broken down any further. |
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Lavorsie |
Discovered the law of conservation of mass. He was beheaded because he was adding water to tobacco. To make it weigh more in masses. He told his friend to watch him after he was beheaded to see how many times he blinked |
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Dalton |
Dalton revised Boyle's thoughts on elements. 1. Matter is made of indivisible things called atoms. 2. An element contains one type of atom. 3. Atoms of different elements have different masses and react differently. 4. Chemical compounds are made up of two or more atoms that are put together. 5. Chemicals reactions correspond to rearrangement of atoms to form different compounds. 1, 2 and 4 are now not correct. |
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Mendeleev |
Made the periodic table based on relative mass. Now it is based on the number of protons. He first grouped alkali metals (1st), alkali earth metals (2nd) and halogens(2nd to last). There were gaps (undiscovered elements), but he thought that some some belong there. He published it to get the credit even though he didn't know all of it. |
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Noble gasses |
Non reactive or inert elements discovered after Mendeleev. Last column. |
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Transition metals |
The D block are transition metals. In the middle. |
