Term
| Life Force (Vis Vitalis) Theory: 1828 Friedrich Wohler |
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Definition
ammonium cyanate -> evaporation -> Urea
- Disproved vitalism
- Showed properties of molecules depend on structure of atoms.
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Term
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Definition
# of bonds to diff. elements
C (tetravalent)
N (trivalent)
O (divalent)
H (monovalent) |
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Term
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Definition
Same # of atoms, but they are connected differently to each other.
ex: C-C-O-H and C-O-C-H
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Term
| Nobel Prize : Henricus van't Hoff and Joseph Achille |
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Definition
| Tetrahedral shape of methane, each bond angle is a perfect 109.5° |
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Term
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Definition
Carbonate for example, whose real structure is a resonance hybrid or mixture of all three Lewis structures. Double headed arrows are used to show the three Lewis structures resonance contributors.
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