Chemistry Chapter 15 Vocabulary Flashcards ionicons-v5-c

surface tension

an inward force that tends to minimize the surface area of a liquid; it causes the surface to behave as if it were a thin skin

surfacant

any substance that interferes with the hydrogen bonding between water molecules and thereby reduces surface tension

aqueous solution

water that contains dissolved substances

solvent

the dissolving medium in a solution

solute

dissolved particles in a solution

solvation

a process that occurs when an ionic solute dissolves

electrolyte

a compound that conducts an electric current when it is in an aqueous solution or in the molten state

nonelectrolyte

a compound that does not conduct an electric current in aqueous solution or in the molten state

strong electrolyte

a solution in which a large portion of the solute exists as ions

weak electrolyte

a solution that conducts electricity poorly because only a fraction of the solute exists as ions

hydrate

a compound that has a specific number of water molecules bound to each formula unit

suspension

a mixture from which some of the particles settle out slowly upon standing

colloid

a mixture whose particles are intermediate in size between those of a suspension and a solution

tyndall effect

scattering of light particles by particles in a colloid or suspension, which causes a beam of light to become visible

brownian motion

the chaotic movement of colloidal particles, caused by collision with particles of the solvent

emulsion

the colloidal dispersion of one liquid in another