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Chem Final Exam Review

Total questions: 76

Worksheet time: 3hrs 39mins

Name
Class
Date
1.
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__Al + __O2--> __Al2O3
a)
4,1 --> 2
b)
4,3 --> 4
c)
3,4 --> 1
d)
4,3 --> 2
2.
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__H2SO3 + __KOH--> __H2O+ __K2SO3
a)
2,1 --> 2,1
b)
1,2 --> 1,1
c)
1,2 --> 1,2
d)
1,2 --> 2,1
3.
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__H2 + __S --> __H2S
a)
1,1 --> 1
b)
2,2 --> 2
c)
1,2 --> 1
d)
1,2 --> 2
4.

Fill in the blank. (Copper has a charge of 2+)

Cu+ AgNO3 → Ag + _____

a)

Cu(NO3)2

b)

CuNO3

c)

CuAg

d)

Cu

5.

Predict the products of this synthesis reaction: H2 + Cl2 →

a)

HCl

b)

H2Cl2

c)

H2Cl

d)

HCl2

6.

Predict the products for the this Single Replacement reaction:

K + HCl →

a)

KCl + H2

b)

KHCl

c)

KH + Cl2

d)

HCl + K2

7.
In an endothermic reaction, heat is ...
a)
taken in or absorbed
b)
given out or released 
8.
What happens in ALL chemical changes?
a)
Change in state of matter
b)
A new substance is formed
c)
Bubbles are produced
d)
An explosion
9.

Hydrocarbon fuel + oxygen ----> ___+____

(Select 2)

a)

CO2

b)

O2

c)

H2O

d)

CxHy

10.
Write a Balanced Equation for this reaction:
C2H4 + 2 O2 -->
a)
C2O2 + H4
b)
CO2 + HOH
c)
CO + H
d)
2 CO2 + 2H2O
11.
2 KClO3 → 2 KCl + 3 O2
How many moles of oxygen are produced when 6.7 moles of KClO3 decompose completely?
a)
6.7 mol
b)
1.0 mol
c)
10.1 mol
d)
4.5 mol
12.
2Na + 2H2O → 2NaOH+ H2
How many grams of hydrogen are produced if 120 g of Na are available?
a)
5.2 g
b)
2.6 g
c)
690 g
d)
45 g
13.
How many moles are in 19.82 g Mg? 
a)
1.226mol Mg
b)
481.7mol Mg
c)
1.000mol Mg
d)
 0.82 mol Mg
14.
What is a limiting reactant?
a)
the reactant that determines how much product can be made
b)
the reactant that is in excess
c)
the product that you can make the most of
d)
the amount of reactants that react with each other
15.
When 12 moles of O2 reacts with 1.1 mole of C10H8 what is the limiting reactant?  C10H8 + 12 O2 --> 10 CO2 + 4 H2O
a)
Oxygen
b)
C10H8
c)
Water
d)
Carbon Dioxide
16.
What is the molar mass of sodium?
a)
11
b)
23
c)
45.98
d)
3
17.
In this image, what are the information in red is called the_______.
a)
Product
b)
Reactant
c)
Chemical Subscript
d)
Yield
18.
In this image, what are the information to the right of the arrow (in black) is called the_______.
a)
Product
b)
Reactant
c)
Chemical Subscript
d)
Yield
19.
Why is the following chemical equation not balanced?
H2 + O2 --> H2O
a)
each side of the equation has a different number of oxygen atoms
b)
each side of the equation has a different number of hydrogen atoms
c)
each side has the same mass
d)
there are no coefficients
20.

What state of matter does the picture below represent?

a)

solid

b)

liquid

c)

gas

d)

plasma

21.

What is a Solid?

a)

Matter that has a fixed shape and size.

b)

Matter that has a fixed size and no fixed shape

c)

Matter that has no fixed shape or size

d)

Matter that has no fixed shape and size

22.

The diagram shows arrangement of particles in a

a)

Solid

b)

Liquid

c)

Gas

23.

What state is represented in the gif?

a)

Solid

b)

Liquid

c)

Gas

24.

What is a gas?

a)

Matter that has fixed shape but no fixed volume

b)

Matter that has no fixed shape and no fixed volume

c)

Matter that has no fixed shape but fixed volume

d)

compounds

25.

The measure of how much space something takes up is ______.

a)

matter

b)

mass

c)

volume

d)

density

26.
Which of the following would increase the (gas) pressure of a system?
a)
Increase the Temperature
b)
Pump in more gas
c)
Decrease the volume
d)
All of these
27.
You have a gas that has a pressure of 2 ATM and a volume of 10L.  What would be the new volume if the pressure was changed to 1 ATM?
a)
5 L
b)
20 L
c)
It would stay at 10L
d)
1 L
28.
If you collect 22.4 L of oxygen (O2) at standard conditions, you will have ____.  
a)
1 mole of gas
b)
6.02 x 1023 molecules of gas
c)
32 g of gas
d)
All of these answers
29.
The volume occupied by 3 moles of N2 at 0oC and 101.3 kPa is ____.  
a)
67.2 L
b)
22.4 L
c)
7.47 L
d)
134.4 L
30.
In order to convert to Kelvin, you add ______ to the Celsius measurement.
a)
372
b)
273
c)
237
d)
732
31.
What is 0 Kelvin known as
a)
No such thing
b)
Very cold
c)
Freezing point of Water
d)
Absolute Zero
32.
If the temperature of a gas increase, the pressure...
a)
Decreases
b)
Increases
c)
Does not change
33.
If a balloon is cooled what will happen to the volume?
a)
Volume will increase
b)
Volume will decrease
c)
Volume will not change
34.
In the ideal gas law, what does the variable n represent? 
a)
gas constant 
b)
moles 
c)
Temperature 
d)
Volume 
35.
Which container will have lower pressure?
a)
left
b)
right
c)
they both have the same pressure
36.
What is standard temperature?
a)
0K
b)
0oC
c)
173 K
d)
173.15 K
37.
If I have 4 moles of a gas at a pressure of 5.6 atm and a volume of 12 liters, what is the temperature?
a)
204 K
b)
200 K
c)
2046 K
d)
2000 K
38.
Consider a sample of oxygen gas at 27° C with a volume of 9.55L at a pressure if 2.97 atm.  The pressure is changed to 8.25 atm and the gas is heated to 125° C.  What’s the new volume? 
a)
4.56 L
b)
4.6 L
c)
15.9 L
d)
16 L
39.

A liquid mixture in which particles can be seen and easily separated by settling or filtration is a ____________

a)

solution

b)

suspension

c)

solvent

d)

solute

40.

A mixture of one substance dissolved evenly throughout another

a)

Colloid

b)

Emulsion

c)

Solution

d)

Suspension

41.

A suspension that does not separate easily is called a

a)

colloid

b)

solution

c)

filtrate

d)

sediment

42.

A mixture of food dye in water is called a

a)

colloid

b)

suspension

c)

emulsion

d)

solution

43.

What is Kool-aid?

a)

elements

b)

heterogenous mixture

c)

homogeneous mixture

d)

compound

44.

What is Italian dressing?

a)

homogeneous

b)

heterogenous

45.

What is coffee?

a)

homogeneous

b)

heterogenous

46.

What is colored water?

a)

homogeneous

b)

heterogenous

47.

Which is the correct set of acid properties:

a)

sour taste, corrosive, change litmus from red to blue

b)

sour taste, corrosive, change litmus from blue to red

c)

sweet taste, slippery, change litmus from blue to red

d)

sour taste, slippery, change litmus from blue to red

48.

Neutral solutions have a pH of:

a)

0

b)

1

c)

7

d)

14

49.

NaOH may be found in drain cleaners and as a component of soaps. Is NaOH an acid or a base?

a)

Acid

b)

Base

c)

Neither (Neutral)

50.

Is pure water acidic, basic, or neutral?

a)

Acidic

b)

Basic

c)

Neutral

51.

The pH scale is a range from:

a)

1-7

b)

0-14

c)

1-5

d)

1-14

52.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
53.

A solution with a pH of 8.6 would be a(n)

a)

Acid

b)

Base

c)

Neutral

d)

Acid and Base

54.

This ion is responsible for the properties of acids

a)

Sodium ion

b)

Hydrogen ion

c)

Hydroxide ion

d)

Oxide ion

55.

This ion is responsible for the properties of bases

a)

Sodium ion

b)

Hydrogen ion

c)

Hydroxide ion

d)

Oxide ion

56.

Neutralization is the process of an acid and a base reacting to form what? Select all that apply

a)

An ionic salt

b)

Hydronium ions

c)

NaCl

d)

Water

57.

What is the formula for nitrous acid?

a)

HNO2

b)

H3N

c)

HNO3

d)

HNO

58.

What is the formula for hydrosulfuric acid

a)

H2S

b)

H2SO2

c)

H2SO3

d)

H2SO4

59.

An arrhenius acid

a)

produces hydroxide ions in a solution

b)

is a proton donor

c)

produces hydrogen ions in a solution

d)

is a proton acceptor

60.

An arrhenius base

a)

produces hydroxide ions in a solution

b)

is a proton donor

c)

produces hydrogen ions in a solution

d)

is a proton acceptor

61.

A bronsted lowry base

a)

produces hydroxide ions in a solution

b)

is a proton donor

c)

produces hydrogen ions in a solution

d)

is a proton acceptor

62.

A bronsted lowry acid

a)

produces hydroxide ions in a solution

b)

is a proton donor

c)

produces hydrogen ions in a solution

d)

is a proton acceptor

63.

Identify the true statement about the following reaction:

F- + H2O --> HF +OH-

a)

H2O is a bronsted lowry base

b)

H2O is not an acid or base according to either model

c)

H2O is a bronsted lowry acid

d)

H2O is an arrhenius acid

64.

Choose the correct statements about HI based on the following reaction (select all that apply):

HI + H2O --> I- + H3O+

a)

HI is an arrhenius acid

b)

HI is an arrhenius base

c)

HI is a bronsted lowry acid

d)

HI is a bronsted lowry base

65.

Acid-base conjugate pairs differ by a single

a)

Electron

b)

Proton

c)

Neutron

d)

Oxygen

66.

Which of the following show an acid and its conjugate base pair (in that order)

a)

H2SO4, SO42-

b)

OH-, H2O

c)

NH4+, H2O

d)

H2CO3, HCO3-

67.
What is the oxidation number of Fe in FeO?
a)
+1
b)
-1
c)
+2
d)
-2
68.
What is the oxidation number of O in CO2?
a)
+2
b)
-1
c)
+4
d)
-2
69.
What is the oxidation number of N in NO21- ?
a)
-3
b)
+4
c)
-2
d)
+3
70.
Identify the reaction type:
C2H5OH(l) + O2(g) --> CO2(g) + H2O(g)
a)
Double displacement
b)
Synthesis
c)
Acid base
d)
Combustion
71.
A chemical reaction that involves a gain/loss of electrons is called:
a)
Double Replacement
b)
Neutralization
c)
Oxidation-Reduction
d)
Hydrolysis
72.
If an atom loses electrons during a chemical reaction, the atom was:
a)
Oxidized
b)
Reduced
c)
Neutralized
d)
Precipitated
73.
The sum of all oxidation numbers in a neutral compound is ___.
a)
0
b)
1
c)
-1
d)
depends on the compound
74.
Which of the following compounds is NOT an ionic compound?
a)
NaCl
b)
NH3
c)
Fe2O3
d)
HCl
75.
What is the oxidation of C in CH4?
a)
-4
b)
-1
c)
+4
d)
+1
76.
What is oxidation number of Mn in MnO2 ?
a)
0
b)
+2
c)
-2
d)
+4

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