Phy Sci chapter eight

Question 0

What determined whether a mixture is a suspension or a colloid

Answer 0

The size of the particles

Question 1

An oatmeal raisin cookie is an example of a what

Answer 1

Heterogenous mixture

Question 2

Chlorine, which is used in swimming pools to kill bacteria, is a what

Answer 2

Solute

Question 3

Which of the following is a solution 
A. Air 
B. Wood
C. Snow 
D. Orange juice

Answer 3

Air

Question 4

Pennies minted after 1984 contain 97.5% zinc and 2.5% copper
These coins are examples of what

Answer 4

Alloys

Question 5

Two liquids that form a heterogenous mixture are said to be

Answer 5

Immiscible

Question 6

What is a method for separating a solution of miscible liquids

Answer 6

Distilling

Question 7

Which of the following is an example of a homogenous mixture 
A. Fog 
B. Gasoline 
C. Paint 
D. Grapefruit juice

Answer 7

Gasoline

Question 8

Particles in a what can be separated by filtration

Answer 8

Suspension

Question 9

The Tyndall effect in observed in

Answer 9

Colloids

Question 10

What is a heterogenous mixture

Answer 10

It doesn’t have a fixed composition

Question 11

What do particles in a suspension do

What size are they

Answer 11

Settle out

Large

Question 12

A mixture in which particles of a material are more or less evenly dispersed throughout a liquid or gas

Answer 12

Suspension

Question 13

What may particles in a suspension do

Answer 13

Settle over time

Be filtered out

Question 14

Liquids that do not mix with each other

Answer 14

Immiscible

Question 15

Process of luring a less dense liquid off a denser liquid

Answer 15

Decanting

Question 16

What is declaring used for

Answer 16

To separate two immiscible liquids

Question 17

What are the size of particles in a colloid

What does this mean

Answer 17

Too small

They can’t settle out

Question 18

A mixture consisting of tiny particles that are intermediate in size between those in solutions and those in suspensions and that are suspended in a liquid, solid, or gas

Answer 18

Colloid

Question 19

What are particles in a colloid large enough for

Answer 19

To scatter light that passes through

Question 20

What does the Tyndall Effect state

Answer 20

That particles in a colloid are large enough to scatter light that passes through

Question 21

What can some immiscible liquids form

Answer 21

Colloids

Question 22

Any mixture of two or more immiscible liquids in which one liquid is dispersed in the other

Answer 22

Emulsion

Question 23

What is a homogenous mixture

Answer 23

It looks uniform even when you examine it under a microscope because the individual complements of the mixture are too small to be seen

Question 24

What is special about the ions in salt water

Answer 24

The number of ions is the same everywhere

Question 25

Are homogenous mixtures solutions

Answer 25

Yes

Question 26

A homogenous throughout which two or more substances are uniformly dispersed

Answer 26

Solution

Question 27

In a solution, the substance that dissolves in the solvent

Answer 27

Solute

Question 28

In a solution, the substance in which the solute dissolves

Answer 28

Solvent

Question 29

What is not a homogenous mixture

Answer 29

Milk

Question 30

What do miscible liquids mix to from

Answer 30

Solutions

Question 31

Liquids that form a single layer when mixed

Answer 31

Miscible

Question 32

A method used to separate miscible liquids that have different boiling points

Answer 32

Distillation

Question 33

What do liquid solutions sometimes contain none of

Answer 33

Water

Question 34

A liquid solution of gasoline, diesel fuel, and kerosene

Answer 34

Petroleum

Question 35

Other states of matter can also form what

Answer 35

Solutions

Question 36

What is the air a solution of

Answer 36

Nitrogen Oxygen Argon Other gases

Question 37

A solution of mercury dissolved in silver

Answer 37

Amalgam

Question 38

The substance that there is the most amount of

Answer 38

Solvent

Question 39

The substance that there is the least amount of

Answer 39

Solute

Question 40

Solids can dissolve in what

Answer 40

Other solids

Question 41

A solid or liquid mixture of two or more metals

Answer 41

Alloy

Question 42

Why is water called the universal solvent

Answer 42

Because many substances can dissolve in water

Question 43

Water can dissolve what

Answer 43

Ionic compounds

Question 44

What is water

Answer 44

A polar compound

Question 45

Describes a molecule in which the positive and negative charges are separated

Answer 45

Polar

Question 46

What do water molecules attract

Answer 46

Both positive ions and negative ions

Question 47

What do polar water molecules pull apart

Answer 47

Ionic crystals

Question 48

The partially negative oxygen atoms of water molecules attract what

Answer 48

The positively charged sodium ions

Question 49

What does dissolving depend on

Answer 49

The forces between particles

Question 50

What must be forces between the solvent molecules and the particles of the substance be grape after than

Answer 50

The force between the particles in the crystal

Question 51

What kind of compound does water dissolve many of

Answer 51

Covalent (molecular)

Question 52

Water forms hydrogen bonds with what

Answer 52

Molecular compounds such as sugar

Question 53

The intermolecular force occurring when a hydrogen atom that is bonded to a highly electronegative atom of one molecule is attracted to two unshared electrons of another molecule

Answer 53

Hydrogen bond

Question 54

What does "like dissolves like" mean

Answer 54

A solvent will dissolve substances that have molecular structures that are like the solvent's structure

Question 55

What will usually not dissolve in water

Answer 55

Nonpolar compounds

Question 56

Describes a molecule in which the centers of positive and negative charge are not separated

Answer 56

Nonpolar

Question 57

Nonpolar solvents are used to dissolve what

Answer 57

Nonpolar materials

Question 58

Why do substances dissolve

Answer 58

The energy transferred from the solvent to the solute, as well as the attractive forces between the solvent and solute molecules, causes molecules at the surface of the crystal to dissolve

Question 59

What kind of solutes dissolve faster

Answer 59

Solutes with a large surface area

Question 60

What helps the solute dissolve faster

Answer 60

Stirring of shaking a solution

Question 61

What particles diffuse throughout the solution faster

Answer 61

Dissolved solute particles

Question 62

More what particles can dissolve

Answer 62

Solute

Question 63

When do solutes dissolve faster

Answer 63

When the solvent is hot

Question 64

What affects the physical properties of a solution

Answer 64

Solutes

Question 65

What increases the boiling point of a solution

Answer 65

Solutes

Question 66

What lowers the freezing point of a solution

Answer 66

Solutes

Question 67

What is solubility

Answer 67

The maximum mass of a solute that can dissolve in 100g of a solvent at a certain temperature and standard atmospheric pressure

Question 68

The ability of a substance to dissolve in another at a given temperature and pressure

Answer 68

Solubility

Question 69

Different substances have different what

Answer 69

Solubilities

Question 70

How much of a substance is in a solution

Answer 70

To express how much of a substance can dissolve in a solvent, you need to use the concentration

Question 71

The amount of a particular substance in a given volume of a mixture, solution, or ore

Answer 71

Concentration

Question 72

What kind of solution has a large amount of solute

Answer 72

Concentrated

Question 73

What kind of solution has only a small amount of solute

Answer 73

Dilute

Question 74

What happens when you add more solute to a saturated solution

Answer 74

In a saturated solution, the dissolved solute is in equilibrium with undissolved solute If you add more solute, it just settles to the bottom of the container

Question 75

A solution that cannot dissolve any more solute under the given conditions

Answer 75

Saturated solution

Question 76

Unsaturated solutions can become what

Answer 76

Saturated

Question 77

A solution that contains less solute than a standard solution does and that is able to dissolve additional solute

Answer 77

Unsaturated solution

Question 78

Doing what to a saturated solution can dissolve more solid

Answer 78

Heating

Question 79

The solubility of most solutes increases with what

Answer 79

Temperature

Question 80

A solution that holds more dissolved solute than is required to reach equilibrium at a given temperature

Answer 80

Supersaturated solution

Question 81

How do you make a supersaturated solution

Answer 81

You raise the temperature of a solution, dissolve more solute, then let the solution cool again

Question 82

What affects the solubility of gases

Answer 82

Temperature and pressure

Question 83

Gaseous solutes are what in warmer water

Answer 83

Less soluble

Question 84

Gases are more soluble under what

Answer 84

High pressure

Question 85

How do you describe how much of a solute is in a solution

Answer 85

One of the most common ways of expressing the concentration of a solution is molarity

Question 86

A concentration unit of a solution expressed in moles of solute dissolved per liter of solution

Answer 86

Molarity