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Chemistry II Unit 4 Review

Total questions: 95

Worksheet time: 3hrs 17mins

Name
Class
Date
1.
Increase in temperature of the reactants can do one of the following
a)
Slow collision frequency
b)
Allow less effective collision between the particles
c)
Cause particles to lose speed
d)
Increase collision between the particles thus increasing the rate.
2.
Grinding a seltzer tablet into powder increases the rate of reaction due to increased
a)
concentration
b)
surface area
c)
temperature
d)
reactants
3.
Which factors increase the rate of a reaction.
a)
increasing temperature
b)
increasing concentration
c)
increasing surface area
d)
all of these
4.
A ______________ is a substance that increases the rate of a reaction without being used up during the reaction. 
a)
catalyst
b)
product
c)
reactant
d)
solute
5.

Smaller clumps allow for a _________ surface area to be exposed for the reaction.

a)
larger
b)
smaller
6.
Increasing the concentration of the reactants will slow down the reaction.
a)
false 
b)
true
7.
Which of these will NOT speed up the rate of reaction between a strip of magnesium and hydrochloric acid?
a)
tightly coil up the strip of magnesium
b)
cut up the strip of magnesium
c)
increase the concentration of the hydrocholoric acid
d)
increase the temperature of the hydrocholoric acid
8.
Products will form faster if____________
a)

the surface area of the reactants are smaller.

b)
temperature is decreased.
c)
concentration of the reactants are increased.
d)
the reaction is not stirred.
9.

For a reaction 2A + B --> 2C, with the rate equation:

Rate = k [A]2 [B]

a)

The order with respect to A is 1 and the order overall is 1

b)

The order with respect to A is 2 and the order overall is 2

c)

The order with respect to A is 2 and the order overall is 3

d)

The order with respect to B is 2 and the order overall is 3

e)

The order with respect to B is 2 and the order overall is 2

10.

Given the following information.

a)

Rate = k[NH4+][NO2-]

b)

Rate = k[NH4+]2[NO2-]2

c)

Rate = k[NH4+]2[NO2-]

d)

Rate = k[NH4+][NO2-]2

e)

none of the above

11.
What is the rate exponent for A?
a)
0
b)
1
c)
2
12.
What is the rate exponent for B?
a)
0
b)
1
c)
2
13.
Rate of chemical reaction means
a)
amount of product formed
b)
speed of reaction
c)
concentration of reacting particles
d)
combining reactants with products
14.
Exothermic reactions release heat to the surroundings.
a)

true

b)

false

15.

What is collision theory?

a)

Molecules must collide in the correct orientation with enough energy to bond.

b)

Molecules need enough energy to collide and react.

c)

Atoms constantly collide and react.

d)

The minimum energy needed for atoms to react

16.
The phase change from water vapor to liquid water is known as...
a)
evaporation
b)
precipitation
c)
condensation
d)
sublimation
17.
2. A change of state from a liquid to a solid is called....
a)
Melting
b)
Freezing
c)
Evaporation
18.
5. What is it called when a solid turns directly into a gas?
a)
Sublimation
b)
Condensation
c)
Liquid
19.
7. All phase changes (changing states) requires energy to be added or taken away.
a)
True
b)
False
20.
Change from gas to liquid...
a)
condensation
b)
evaporation
c)
expansion
d)
movement
21.
Change from Liquid to Solid is call......
a)
fusion
b)
Freezing
c)
sublimation
d)
evaporation
22.
All changes in the state of matter of a substance requires
a)
vibration
b)
water
c)
permission
d)
energy
23.
What happens to particles when they are heated?
a)
They speed up and spread out
b)
They slow down and compress
c)
They stop moving
d)
They move closer together and speed up
24.
The faster molecules move, 
a)
the higher the temperature
b)
the less temperature
c)
the same temperature
d)
I don't know
25.
The slower molecules move, 
a)
the higher the temperature
b)
the less temperature
c)
the same temperature
d)
I don't know
26.

Temperature is a measure of the average _____________ energy of the particles of a substance.

a)

potential

b)

kinetic

c)

gravitational

d)

heat

27.

Which letter represents particles in solid form?

a)

A

b)

B

c)

C

d)

D

e)

E

28.

Between which points is the temperature of the substance remaining constant? (Diagram F)

a)

A-B only.

b)

A-B, C-D, E-F

c)

B-C only.

d)

B-C, D-E

29.

True or false: melting and freezing occur at the same temperature

a)

True

b)

False

c)

I don't know

30.

A substance's heating curve is shown in the graph. What is its boiling point? (Diagram B)

a)

100 C

b)

60 C

c)

80 C

d)

20 C

31.

Moving left to right across the diagram, are the particles moving faster or slower as time goes on? (Diagram F)

a)

Faster

b)

Slower

32.

Which letter represents where vaporization is occurring?

a)

A

b)

B

c)

C

d)

D

e)

E

33.

If a substance is freezing, what is happening to it?

a)

It is changing from a liquid to a solid

b)

It is losing thermal energy to its surroundings

c)

the particles of the substance are making bonds

d)

all of the above

34.

If a substance is melting, what is happening to it?

a)

It is changing from a solid to a liquid

b)

It is gaining thermal energy from its surroundings

c)

the particles of the substance are breaking bonds

d)

all of the above

35.

Boiling and evaporation are forms of vaporization

a)

True

b)

False

36.

What is happening at letter D?

a)

Evaporation of a liquid

b)

Condensation of a gas

c)

Boiling of a liquid

d)

The answer depends on if there is thermal energy being added or removed

37.

What letter on the diagram represents the substance only in the gas phase?

a)

A

b)

B

c)

C

d)

D

38.

What letter on the diagram represents a substance only in the liquid?

a)

A

b)

B

c)

C

d)

D

39.

What letter on the diagram represents a substance only in the solid phase?

a)

A

b)

B

c)

C

d)

D

40.

What letter on the diagram represents the triple point?

a)

A

b)

B

c)

C

d)

D

41.

What is the melting point of this substance at 1 ATM of pressure?

a)

40

b)

60

c)

100

d)

110

42.

What is the melting point of this substance at 1 ATM of pressure?

a)

40

b)

60

c)

100

d)

110

43.

What is the boiling point of this substance at 1 ATM of pressure?

a)

40

b)

60

c)

100

d)

110

44.

What would the state of this substance be at 0.5 ATM of pressure at a 100 degrees Celsius?

a)

Solid

b)

Liquid

c)

Gas

d)

Michigan

45.

What would the state of this substance be at 1 ATM of pressure at a 80 degrees Celsius?

a)

Solid

b)

Liquid

c)

Gas

d)

Michigan

46.

The average atmospheric pressure in Michigan is close to 1 ATM. What state of matter would this substance be in if it was a nice summer day with a temperature of 80 o F (27 o C)?

a)

Solid

b)

Liquid

c)

Gas

d)

Michigan

47.

What happens along the AC line?

a)

Melting/Freezing

b)

Boiling/Condensing

c)

Boiling/melting

d)

freezing/condensing

48.

What happens along the BC line?

a)

Melting/Freezing

b)

Boiling/Condensing

c)

Boiling/melting

d)

freezing/condensing

49.

The critical point is found at point.....

a)

A

b)

B

c)

C

d)

D

50.
If a liquid has high viscosity, it probably has:
a)
strong IMF
b)
weak IMF
51.
The strength of temporary dipoles:
a)
increases with the size of molecules
b)
is greater than intremolecular forces
c)
is the strongest intermolecular force
52.
How many electrons are shared between two atoms that are triple bonded?
a)
6
b)
2
c)
4
d)
8
53.

Intermolecular forces are responsible for which of the following properties?

a)

State of matter

b)

Color

c)

Odor

d)

Conductivity

54.
Intermolecular forces are the forces
a)
within molecules
b)
between molecules
55.

Which of the following is correct for CH4?

a)

Ionic bond, IMF's

b)

Ionic bond, No IMF's

c)

Covalent bond, IMF's

d)

Covalent bond, No IMF's

56.
N2 +  3H2 → 2NH3 
How many moles of hydrogen are needed to react with 2 moles of nitrogen?
a)
6
b)
2
c)
3
d)
1
57.
Cl2 + 2KBr → Br2 + 2KCl
How many grams of potassium chloride (KCl) can be produced from 356 g of potassium bromide (KBr)?
a)
749 g
b)
223 g
c)
479 g
d)
814 g
58.
CH4 + 2 O2 → CO2 + 2 H2O
How many moles of carbon dioxide are produced from the combustion of 110 g of CH4?
a)
13.7 mol
b)
2.75 mol
c)
6.11 mol
d)
6.85 mol
59.

4 Al + 3 O2 –> 2 Al2O3 How much aluminum would be needed to completely react with 45 grams of O2?

a)

1.05 moles

b)

3.75 moles

c)

0.875 grams

d)

1.875 moles

60.
Mole ratios are obtained from the
a)
balanced chemical equation
b)
periodic table
c)
molar mass
61.
When does a chemical reaction stop?
a)
When the lab is finished
b)
When the excess reactant is used up
c)
When the limiting reactant is used up
d)
Chemical reactions never stop
62.
Identify the limiting reagent when 6.00 g HCl combines with 5.00 g Mg to form MgCl2.
 
Mg +  2HCl --> MgCl2  +  H2   
 
a)
Mg
b)
H2
c)
MgCl2
d)
HCl
63.
Fe (s) + S (l) --> FeS (s)  

In the experiment above, 7.62 g of Fe are allowed to react with 8.67 g of S.
How much FeS is formed?
a)
14.8 g
b)
12.2 g
c)
13.7 g
d)
19.9 g
64.
2CO  +  O2  −-> 2CO2
How many liters of carbon dioxide are produced from 10L of carbon monoxide?
a)
10
b)
20
c)
1
d)
5
65.
4 Al + 3 O2 –> 2 Al2O3  How much aluminum would be needed to completely react with 45 grams of O2?
a)
1.05 moles
b)
3.75 moles
c)
1.875 grams
d)
1.875 moles
66.
CH4  +  2O2  →  CO2  +  2H2O
24 grams of CH4 was added to the above reaction. Calculate the theoretical yield of CO2.
a)
66 grams
b)
132 grams
c)
33 grams
d)
8.72
67.
The ______________ yield is the maximum amount of product possible in a reaction. This determines the amount of product that should be produced in a perfect setting
a)
Percent
b)
actual
c)
stoichiometry
d)
theoretical
68.

When reacting Na with Cl2, we calculated that the theoretical yield should be 13 grams. Our actual yield was 12.5 grams. What is the percent yield?

a)

90.4%

b)

104%

c)

96.15%

d)

1.04%

69.

2Fe2O3 + C → Fe + 3CO2

You add 28 grams of carbon. You find the actual yield to be 181.2 grams of CO2. What is the percent yield of CO2? (Hint: calculate theoretical yield of CO2 first)

a)

58.83%

b)

308%

c)

6435%

d)

15.5

70.
Theoretical yield = 73g
Actual yield = 62g
Calculate the percent yield.
a)
1.16%
b)
116%
c)
85%
d)
76%
71.

Balance this equation.

_CF4 + _Br2 -- _CBr4 + _F2

a)

2,1,2,1

b)

1,2,2,1

c)

1,2,1,2

d)

2,2,2,2

72.

When balancing equations, the rule is that you can only add, change, and remove ____________

a)

Coefficients

b)

Mass

c)

Subscripts

d)

Elements

73.

Which of the following reactions involves the ions of two compounds exchanging places to form two new compounds?

a)

Synthesis

b)

Double replacement

c)

Combustion

d)

Single Displacement

74.

The Law of Conservation of Mass states that the total mass of the reactants should be

a)

More than the mass of the products

b)

Equal to the mass of the products

c)

Ignored during the reaction

d)

Less than the mass of the products

75.
What type of reaction is illustrated below?
2HI --> H2  +  I2
a)
synthesis
b)
decomposition
c)
single replacement
d)
double replacement
76.
The reaction below is an example of?
AgNO3 + NaCl → AgCl + NaNO3
a)
Single Replacement
b)
Double Replacement
c)
Decomposition
d)
Combustion
77.
What type of reaction occurs between an element and a compound?
Zn + 2HCl --> ZnCl2 + H2
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
78.
In the reaction of K + AgNO3 what will the products be?
a)
K and AgNO3
b)
Ag and KNO3
c)
NO3 and AgK
d)
No reaction
79.

Predict the products for the this reaction:

Mg + CuCl2 -->

a)

MgCl2 + Cu

b)

MgCl + Cu

c)

MgCu + Cl2

d)

CuMg + Cl2

80.

Predict the products for the this reaction:

AgNO3 + KCl -->

a)

AgCl + KNO3

b)

AgK + ClNO3

c)

AgNO3 + KCl

d)

KAg + NO3Cl

81.
Predict the products of the following reaction: Pb(NO3)2 + 2KI → 
a)
PbI2 + K(NO3)
b)
PbK + I(NO3)
c)
no reaction
d)
PbK(NO3) + I2 
82.
Which of the following reactions is balanced?
a)
2CH4 + O2 -> CO2 + H2O
b)
CH4 + 2O2 -> CO2 + H2O
c)
CH4 + 2O2 -> CO2 + 2H2O
d)
None of the chemical equations are balanced.
83.

What is the right ratio of chemicals for the balanced chemical equation?

__CO + __Fe2O3--> __Fe + __CO2

a)
3,1 --> 2,3
b)
3,2 --> 1,1
c)
3,2 --> 2,4
d)
3,2 --> 2,1
84.

Name this molecule:

a)

methane

b)

ethane

c)

propane

d)

butane

85.

What is the correct name for the alkyne shown?

a)

butyne

b)

1-butyne

c)

2-butyne

d)

1-methyl-1-propyne

86.

What is the functional group of alcohols?

a)

–NH2

b)

–COOH

c)

–CHO

d)

–OH

e)

–NO2

87.
What is this functional group?
a)
ketone
b)
amide
c)
ether
d)
amine
88.

Name the compound.

a)

copper sulfate

b)

copper (I) sulfate

c)

copper (II) sulfate

d)

copper monosulfate

89.

Nitrate

a)
NO-
b)
NO2-
c)
NO3-
d)
NO4-
90.

Sulfate

a)

SO32–

b)

HSO4–

c)

SO42–

d)

CH3COO–

91.

What molecular geometry would PH3 have?

a)

Trigonal Pyramidal

b)

Trigonal Bipyramidal

c)

Bent

d)

Linear

92.

This carbon atom went through ....

a)

sp hybridization

b)

sp2 hybridization

c)

sp3 hybridization

d)

dsp3 hybridization

93.

What is the hybridization of a linear molecule?

a)

sp

b)

sp2

c)

sp3

d)

sp3d

94.

What is the hybridization of this molecule shown above

a)

sp

b)

sp2

c)

sp3

d)

sp4

95.

Match the following to the correct type of bonding.

a)

HF

1.

Acid

b)

Na2SO4

2.

Ionic

c)

SF6

3.

Molecular Covalent

d)

Diamonds

4.

Network Covalent

e)

Fe3N2

5.

Transition Metal Ionic

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