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Unit 6 Exam Review

Total questions: 47

Worksheet time: 53mins

Name
Class
Date
1.

Besides stirring, which of the following should be done to make this powder dissolve faster in the liquid?

a)

Add heat to the liquid

b)

Cool the liquid in a freezer

c)

Add more powder to the liquid

d)

Store the mixture in a dark place

2.

Which one of these is considered a SOLUTE?

a)

Salt

b)

Water

c)

Salt Water

3.

Factor(s) that affect solubility

a)

Temperature

b)

Agitation

c)

Surface area

d)

all of them

4.

ionic compounds get separated into ions in solution through which process

a)

solution

b)

homogeneous solution

c)

dissociation

d)

dissolving

5.

Which end of the water molecule would surround a Cl- ion in a solution

a)

the Oxygen end

b)

the Hydrogen end

c)

neither end

d)

they don't surround the ion

6.

When water molecules completely surround ions or covalent molecules, they form what around them to keep them apart?

a)

hydration shells

b)

a polar bond

c)

an invisible force field

d)

a hydrogen bond

7.

Which of the following would not be considered an agitation to increase dissolving?

a)

shaking the solute/solvent mix

b)

stirring the solute solvent mix

c)

swirling the solute/solvent mix

d)

cooling the solute/ solvent mix

8.
This atom in a water molecule has more of a negative charge
a)
Oxygen
b)
Hydrogen
9.
True or false: Sucrose (sugar) is a polar molecule like water
a)
True
b)
False
10.
Salt dissolves in water because
a)
The water molecules wiggle between the Na and Cl atoms
b)
Water gets warm and moves around too much
c)
The polar areas of water molecules stick to the Na and CL ions
11.
What does "polar" mean?
a)
A molecule is cold
b)
A molecule has ionic bonds
c)
A molecule has covalent bonds
d)
A molecule has areas of positive and negative charge
12.
Salt dissolves in water because
a)
The water molecules wiggle between the Na and Cl atoms
b)
Water gets warm and moves around too much
c)
The polar areas of water molecules stick to the Na and CL ions
13.

In the image, what is the charge of the solute particle in the center of the hydration shell?

a)

Positve

b)

Negative

c)

No Charge

d)

Not enough information

14.

The process of dissolving

a)

dissolvability

b)

Dissolution

c)

Solution

d)

Universal solvent

15.

Contains more than the maximum amount of solute per solvent; any small particle or disturbance can cause crystalization.

a)

Concentrated

b)

Saturated

c)

Supersaturated

d)

Unsaturated

16.

When a solution cannot hold anymore solute in a solvent at a given temperature and pressure

a)

Concentration

b)

Saturated

c)

Supersaturated

d)

Unsaturated

17.

When a solution can hold more solute because it currently contains less than the maximum amount for the solvent available.

a)

Concentration

b)

Saturated

c)

Supersaturated

d)

Unsaturated

18.

A measure of how much solute is dissolved in a solvent

a)

Concentration

b)

Dissolution

c)

Solubility

d)

Solution

19.

Unable to be dissolved

a)

dissolvability

b)

Insoluble

c)

Soluble

d)

Unsaturated

20.

Able to be dissolved

a)

dissolvability

b)

Insoluble

c)

Soluble

d)

Unsaturated

21.

The part of the solution that is present in the greater amount and does the dissolving

a)

Solute

b)

Solvent

c)

Solution

d)

Solubility

22.

The part of the solution that is present in the lesser amount and that is dissolved.

a)

Solute

b)

Solvent

c)

Solution

d)

Solubility

23.

Which color pigment has the smallest mass?

a)

Yellow

b)

Orange

c)

Blue

d)

Green

e)

Purple

24.

Chromatography was done on several leaves of plant species. Which species is most similar to Species Y.

a)

W

b)

X

c)

Z

d)

None of these

25.

Use the figure shown: Which has the greatest density of solute particles?

a)

A

b)

B

c)

E

26.

Use the figure shown: Which has a concentration of 0.25moles per 1 Liter of solution?

a)

A

b)

B

c)

D

d)

E

27.

Use the figure shown: Which dilution can dissolve the most additional solute?

a)

A

b)

B

c)

D

d)

E

e)

F

28.

Use the figure shown: Which dilution represents a 0.5M solution. This is based on the kool aid lab we did.

a)

A

b)

B

c)

C

d)

D

e)

E

29.
Zinc Hydroxide
a)
Soluble 
b)
Insoluble
30.
KBr
a)
Soluble
b)
Insoluble
31.

What condition would KNO3 be at 85g and 45 degrees C in 100g of water?

a)

Unsaturated

b)

Saturated

c)

Supersaturated

d)

Dissolved

32.

This is a type of mixture where one substance dissolves into another

a)

Solution

b)

Miscibility

c)

Compound

d)

Solubility

33.

Molar mass of NaOH is ______________________

a)

40 grams/mol

b)

50 grams/mol

c)

45 grams/mol

d)

38 grams/nol

34.

How many mols of HCl are in 3 liters of 2.0M HCl solution?

a)

2.0

b)

1.5

c)

6.0

d)

0.66

35.

Molarity is defined as _________ divided by ___________

a)

mol, liters

b)

mol, kg

c)

kg, liters

d)

liters, kg

36.

Molarity is measured in _____.

a)

moles per g.

b)

mols per L.

c)

moles per mm.

d)

moles per mL.

37.
What is the molarity of 3 mole of hydrochloric acid in 3 L of water. 
a)
3
b)
1
c)
6
d)
9
38.

At 30'C, which substance has the lowest solubility?

a)

KNO3

b)

KBr

c)

NaCl

d)

Yb2(SO4)3

39.

Which two solutions have the same concentration?

a)

A & D

b)

A & E

c)

C & E

d)

F & C

e)

B & E

40.

The drawings below represent beakers of aqueous solutions. Each o represents a dissolved solute particle.Which solution is least concentrated?

a)

A

b)

B

c)

C

d)

E

e)

F

41.

Kool-Aid - flavoring, coloring, sugar, and water. Identify the solvent.

a)

water

b)

powder

c)

sugar

d)

powder and sugar

42.
Contains the maximum amount of dissolved solute
a)
unsaturated solution
b)
supersaturated solution
c)
saturated solution
43.
Which substance is INSOLUBLE in water?
a)
salt (sodium chloride)
b)
sugar (sucrose)
c)
oil
d)
copper sulfate
44.

Which diagram shows the MOST dense object?

a)

left

b)

center

c)

right

45.

A block of aluminum occupies a volume of 15.0 mL and weighs 45.0 g. What is its density?

a)

3 g/mL

b)

0.3333 g/mL

c)

675 g/mL

d)

I have no idea

46.

How do we currently clean up an oil spill?

a)

Remove all coral then burn the oil

b)

Containment booms

c)

Chemical dispersal

d)

All of the above

47.

When an oil slick reaches coastline ecosystems and washes up on beaches it poses a huge threat to biological organisms. The main removal / clean up method for this is... (Select TWO that apply)

a)

Oil booms

b)

Oil skimmers

c)

Physical removal of sand / soil

d)

Flushing with hoses, brushes and shovels

e)

In-situ burning

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