quiz 4.docx - Chem 111 quiz 4 1 Diffusion the spreading via...

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Chem 111 quiz 4 1. Diffusion: the spreading, via random motions, of one substance through a space occupied by one or more substances; for example, gas spreading out through another gas to occupy the space uniformly Hydrogen bond: non-covalent interaction between a hydrogen atom and another very electronegative atom to produce an unusually strong and directional dipole-dipole interaction. Mixture: a combo of 2 or more substances in which the substances retain their identity Nonpolar molecule: a molecule that does not possess a net dipole moment Polar molecule: a molecule that possess a net dipole moment Solution: a homogeneous mixture of 2 or more substances 2. Chromotography: the separation of a mixture by passing it in solution or suspension or as a vapor (as in gas chromatography) through a medium in which the components move at different rates. 3. To obtain good separation in chromatography, what factor must be maximized/minimized?
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