CHEM 4 Lecture Notes - Lecture 2: Atomic Radius, Covalent Bond, Nonmetal
29 Apr 2016
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Document Summary
Intrinsic (intensive) properties amount independent (temperature, density) Extrinsic (extensive) properties amount dependent (mass) Physical properties measurable w/o changing the chemical identity of the material. Chemical properties how does a species react with other chemicals/species. Extensive props leveraged against each other intensive prop. You don"t have to do all conversions at once, you can do them separately, but try to do them in strings. Ex: (mi/hr) (km/s) work with the units you know even if it takes longer. 30 (mi/hr) x (ft/mi) x (in/ft) x (cm/in) x (m/cm) x (km/m) (km/hr) x (hr/min) x (min/sec) = (km/sec) Set of properties that are repeating as you move. Repeating period in graph for size, radius, reactivity, etc. Atomic radius: dist from edge of atom to nucleus. Hard sphere approximation: atom can be treated as if it were a hard sphere. Use this to calculate atomic radius and the like. Atom is actually more like a water balloon, more flexible.
