Chapter 15 Vocab

Question 0

Surfactant

Answer 0

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

Question 1

Surface tension

Answer 1

The inward force or pull that tends to minimize the surface area of a liquid

Question 2

Aqueous solution

Answer 2

Water that contains dissolved substances

Question 3

Solvent

Answer 3

The dissolving medium in a solution (dissolver)

Question 4

Solute

Answer 4

The dissolved particles in a solution (loosened)

Question 5

Solvation

Answer 5

The process by which the positive and negative ions of an ionic solid become surrounded by solvent molecules

Question 6

Electrolyte

Answer 6

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

Question 7

Non electrolyte

Answer 7

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

Question 8

Strong electrolyte

Answer 8

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

Question 9

Weak electrolyte

Answer 9

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

Question 10

Hydrate

Answer 10

A compound that contains water of hydration

Question 11

Suspension

Answer 11

A mixture from which particles settle out upon standing

Question 12

Colloid

Answer 12

A heterogeneous mixture containing particles that range in size from 1nm to 1000nm

Question 13

Tyndall effect

Answer 13

The scattering of visible light by colloidal particles

Question 14

Brownian motion

Answer 14

The chaotic movement of colloidal particles, caused by collision with particles of the solvent in which they are dispersed

Question 15

Emulsion

Answer 15

A colloidal dispersion of a liquid in a liquid