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Glossary of Chem Test Ch. 17

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inward force or pull that tends to mnimize the SA of a liquid
surface tension
wetting agent; any substance whose molecules interface with a hydrogen bonding between water molecules, reducing surface tension
surfactant
any substance dissolved in water
aqueous solution
substance being dissolved
solute
dissolving medium (water)
solvent
water in a crystal
water of hydration
term describing salts and other compounds that remove moisture from the air
hygroscopic
dying agents
desiccants
compound that conducts an electric current in aqueous solution or molten state
electrolyte
compound that does not conduct an electrocurrent in aqueous solution or molten state; most molecular compounds are not electrolytes but in aqueous solution become ones
nonelectrolyte
mixture in which some particles will settle upon standing
suspenison
mixture with particles that are intermedial in size between true solutions and suspensions
colloid
chaotic movement of colloidal particles due to water particles colliding with colloidal particles
Brownian motion

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