Prentice Hall Chemistry (Chapter 15 Vocab)
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Created by:
hsainghass on March 30, 2011
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16 terms
Terms | Definitions |
|---|---|
 Surfactant | any substance that interferes with the hydrogen bonding between water molecules and thereby reduces surface tension |
| Surface tension | The inward force, or pulltha tend to minimize the surface area of a liquid is called ___ |
| Solvent | The dissolving medium (water dissolving sugar) |
| solute | The dissolved particles (sugar that is being dissolved in water) |
| Aequeous solution | water that contains dissolved substances |
| solvation | The process by which the positive and negative ions of an ionic solid become surrounded by solvent molecules |
| electrolyte | a compound that conducts an electric rurent when it is in anaqueuous solution or in the molten state. (Ionic compounds are _______) |
| non-electrolyte | a compound that does not conduct an electric current in either aqueous solution or the molten state. (Molecular compounds such as Sugar, Alchol) |
| weak electrolyte | conducts electricity poorly because only a fraction of the solute in the solution exists as ions (ammonia, Mercury (ii) Cloride) |
| strong electrolyte | nearly all the dissolved compounds exist as ions ( soluble salts, inorganic acids, inorganic bases) |
| hydrate | a compound that contains water of hydreation ( contained with crystals) |
| colloid | a heterogeneous micture containing particles that rang in size from 1nm to 1000nm ( smaller than those in suspensions and large than thos in solutions) |
| Brownian motion | The chaotic movement of colloidal particles caused by collisions of the molecules of the dispersion medium with the small, dispersed colloidal particles. |
| suspension | a mixture from which partilces settle out ipon standing |
| Tyndall effect | the scattering of visible light by colloidal particles |
| emulsion | a colloidal dispersion of a liquid into a liquid ( maintain stablity of colloidal mixtures) |
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