Ch 12 Section 1

Question 1

Soluble: capable of

Answer 1

being dissolved

Question 2

A solution is a homogenous mixture of

Answer 2

two or more substances in a single phase

Question 3

in a solution, atoms, molecules, or ions are thoroughly mixed, resulting in a mixture that has

Answer 3

the same composition and properties throughout

Question 4

in the simplest type of solution, the particles of one substance are randomly

Answer 4

mixed with the particles of another substance

Question 5

the dissolving medium in a solution is the

Answer 5

solvent

Question 6

the substance dissolved in a solution is the

Answer 6

solute

Question 7

the solute is generally designated as that component of a solution that is of

Answer 7

lesser quantity

Question 8

in a solution, the dissolved solute particles are so small that they

Answer 8

cannot be seen

Question 9

the dissolved solute particles remain mixed with the solvent …., so long as the existing conditions remain..

Answer 9

indefinitely; unchanged

Question 10

the solute particle dimensions are those of atoms, nmolecules and ions which range from about

Answer 10

0.01 to 1 nm in diameter

Question 11

solutions may exist as

Answer 11

gases, liquids, or solids

Question 12

many alloys are solid solutions in which the atoms of two or more

Answer 12

metals are uniformly mixed

Question 13

by properly choosing the proportions of each metal in the alloy, many desirable properties can be

Answer 13

obtained

Question 14

alloys can have higher … and greater resistance to … than the pure metals

Answer 14

strength; corrosion

Question 15

if the particles in a solvent are so large that they settle out unless the mixture is constantly stirred or agitated, the mixture is a

Answer 15

suspension

Question 16

gravity pulls the particles in a suspension to the

Answer 16

bottom of the container

Question 17

partivles over 1000 nm in diameter—1000 times as large as atoms, molecules, or ions— form

Answer 17

suspensions

Question 18

the particles in a suspension can be separated from heterogenous mixtures by

Answer 18

passing the mixture through a filter

Question 19

particles that are intermediate in size between those in solutions and suspensions form mixtures known as

Answer 19

colloidal dispersions (colloids)

Question 20

particles between 1 nm and 1000 nm in diameter may form

Answer 20

colloids

Question 21

the particles in a colloid are small enough to be suspended throughout the solvent by the constant movement of the

Answer 21

surrounding molecules

Question 22

the colloidal particles make up the

Answer 22

dispersed phase

Question 23

the water is the

Answer 23

dispersing medium

Question 24

emulsion and foam refer to specific types of

Answer 24

colloids

Question 25

many colloids appear homogenous because the individual particles cannot be

Answer 25

seen

Question 26

the particles in colloids are large enough to

Answer 26

scatter light

Question 27

tyndall effect occurs when light is scattereed by colloidal particles dispersed in a

Answer 27

transparent medium

Question 28

the tyndal effect is a property that can be used to distinguish between a

Answer 28

solution and a colloid

Question 29

the individual particles of a colloid can be detected under a microscope if a bright light is cast on the speciment at a

Answer 29

right angle

Question 30

the particles in colloids are seen to move

Answer 30

rapidly in a random motion

Question 31

this motion is due to collisions of rapidly moving molecules and is called

Answer 31

Brownian motion

Question 32

substances that dissolve in water are classified according to whether they yield

Answer 32

molecules or ions in solution

Question 33

when an ionic compound dissolves, the positive and negative ions separate from each other and are

Answer 33

surrounded by water molecules

Question 34

these solute ions are free to move, making it possible for an electric current to

Answer 34

pass through the solution

Question 35

a substance that dissolves in water to give a solution that conducts electric current is called an

Answer 35

electrolyte

Question 36

a solution containing neutral solute molecules does not conduct electric current because it does not contain mobile

Answer 36

charged particles

Question 37

a substance that dissolves in water to give a solution that does not conduct an electric current isi called a

Answer 37

nonelectrolyte

Question 38

the elctrodes are conductors that are attached to a power supply and that make electric

Answer 38

contact with the test solution

Question 39

for a current to pass through the light bulb filament the test solution must provide a conducting path between the two

Answer 39

electrodes

Question 40

a nonconducting solutionis like an open switch between the electrodes and there is no

Answer 40

current in the circuit

Question 41

the light bulb glows brightly if a solution that is a good conductor is

Answer 41

tested

Question 42

for a moderately conductive solution the light bulb is

Answer 42

dim

Question 43

gas-gas solution example

Answer 43

oxygen in nitrogen

Question 44

gas-liquid solution example

Answer 44

carbon dioxide in water

Question 45

liquid-liquid solution example

Answer 45

alcohol in water

Question 46

liquid-solid solution example

Answer 46

mercury in silver and tin (dental amalgam)

Question 47

solid-liquid solution example

Answer 47

sugar in water

Question 48

solid-solid solution example

Answer 48

copper in nickel (Monel alloy)

Question 49

sol colloid- solid dispersed in liquid example

Answer 49

paints, mud

Question 50

gel colloid- solid network extending throughout a liquid example

Answer 50

gelatin

Question 51

liquid emulsion colloid- liquid dispersed in liquid example

Answer 51

milk, mayonnaise

Question 52

foam colloid- gas dispersed in liquid example

Answer 52

shaving cream, whipped cream

Question 53

solid aerosol collid-solid dispersed in gas example

Answer 53

smoke, airborne particulate matter, auto exhaust

Question 54

liquid aerosol colloid-liquid dispersed in gas example

Answer 54

fog, mist, clouds, aerosol spray

Question 55

solid emulsion colloid- liquid dispersed in solid example

Answer 55

cheese, butter

Question 56

salt solution–

Answer 56

electrolyte solute

Question 57

sugar solution–

Answer 57

nonelectrolyte solute

Question 58

hydrochloric acid solution–

Answer 58

electrolyte solute