Question 1

Brewed coffee is a pure substance.

Accepted Answer

A) True 
 B)False

Question 2

Convert 4.6 km to mm.

Accepted Answer

A)  4.6 x 106 mm 
B)  4.6 x 103 mm 
C)  4.6 x 10-6 mm 
D)  4.6 x 10-2 mm 
E)  4.6 x 104 mm 
A)  4.6 x 106 mm 
B)  4.6 x 103 mm 
C)  4.6 x 10-6 mm 
D)  4.6 x 10-2 mm 
E)  4.6 x 104 mm

Question 3

How many cubic centimeters of an ore containing only 0.22% gold (by mass) must be processed to obtain $100.00 worth of gold The density of the ore is 8.0 g/cm3 and the price of gold is $818 per troy ounce. (14.6 troy oz = 1.0 ordinary pound, called an avoirdupois pound; 1 lb = 454 g)

Accepted Answer

A)  0.48 cm3 
B)  220 cm3 
C)  1.4 * 103 cm3 
D)  1.7 * 103 cm3 
E)  1.8 * 104 cm3 
A)  0.48 cm3 
B)  220 cm3 
C)  1.4 * 103 cm3 
D)  1.7 * 103 cm3 
E)  1.8 * 104 cm3

Question 4

An American engineer who had been transferred to Europe was asked to build bridge pilings exactly as he had in the United States. Each piling required 20.0 cubic yards of concrete in the United States. How many cubic meters of concrete are required for each piling Given: 1yd = 0.914 m.

Accepted Answer

A)  15.3 m3 
B)  16.3 m3 
C)  17.3 m3 
D)  18.3 m3 
E)  None of the above 
A)  15.3 m3 
B)  16.3 m3 
C)  17.3 m3 
D)  18.3 m3 
E)  None of the above

Question 5

In the process of fixing breakfast you: 
1) break open the egg
2) fry it
3) cut the fried egg into pieces
4) cut toast in half
Which one of these is a chemical process

Accepted Answer

A)  #1 
B)  #2 
C)  #3 
D)  #4 
E)  None of the above 
A)  #1 
B)  #2 
C)  #3 
D)  #4 
E)  None of the above

Question 6

Iced tea is a mixture.

Accepted Answer

A) True 
 B)False

Question 7

Give the correct number of significant figures and units to the problem below. 4.51 m x 3.2 m =

Accepted Answer

A)  14.4 m 
B)  14 m 
C)  14 m2 
D)  14.4 
E)  14.4 m2 
A)  14.4 m 
B)  14 m 
C)  14 m2 
D)  14.4 
E)  14.4 m2

Question 8

You just measured a block of wood and obtained the following information: mass = 55.120 g
Length = 8.5 cm
Height = 4.3 cm
Width = 3.3 cm
Determine the volume and density of the wood block.

Accepted Answer

A)  Volume of the wood block = 110 cm3; density of the wood block = 0.36 g/cm3 
B)  Volume of the wood block = 120 cm3; density of the wood block = 0.36 g/cm3 
C)  Volume of the wood block = 110 cm3; density of the wood block = 0.46 g/cm3 
D)  Volume of the wood block = 120 cm3; density of the wood block = 0.46 g/cm3 
E)  None of the above have both the volume and density reported correctly 
A)  Volume of the wood block = 110 cm3; density of the wood block = 0.36 g/cm3 
B)  Volume of the wood block = 120 cm3; density of the wood block = 0.36 g/cm3 
C)  Volume of the wood block = 110 cm3; density of the wood block = 0.46 g/cm3 
D)  Volume of the wood block = 120 cm3; density of the wood block = 0.46 g/cm3 
E)  None of the above have both the volume and density reported correctly

Question 9

The fashioning of a piece of wood into a table leg is a physical change.

Accepted Answer

A) True 
 B)False

Question 10

An organic liquid has a density of 1.2 g/cm3. What is the mass of a 35.0 cm3 sample of this liquid

Accepted Answer

A)  35 g 
B)  29 g 
C)  42 g 
D)  36 
E)  None of the above 
A)  35 g 
B)  29 g 
C)  42 g 
D)  36 
E)  None of the above

Question 11

When bacteria changes milk to yogurt it is a chemical change.

Accepted Answer

A) True 
 B)False

Question 12

A tentative explanation for a set of observations that can be tested by further experimentation is referred to as

Accepted Answer

A)  a hypothesis. 
B)  a law. 
C)  a theory. 
D)  none of the above. 
A)  a hypothesis. 
B)  a law. 
C)  a theory. 
D)  none of the above.

Question 13

Americans combined drive about 4.0*109 miles per day and their vehicles get an average of 20 miles per gallon of fuel used. For each 1 kg of gasoline that is burned, about 3.0 kg of CO2 are produced. How many kilograms of CO2 are emitted into the atmosphere each day by cars in the U.S. One gallon of gas weighs about 3.5 kg.

Accepted Answer

A)  2.1 * 109 kg 
B)  8.4 * 1011 kg 
C)  1.7 * 108 kg 
D)  93 kg 
E)  none of these 
A)  2.1 * 109 kg 
B)  8.4 * 1011 kg 
C)  1.7 * 108 kg 
D)  93 kg 
E)  none of these

Question 14

What is the mass of 1.00 dm3 of mercury The density of mercury is 13.6 g/cm3.

Accepted Answer

A)  1.26 * 104 g 
B)  1.36 * 104 g 
C)  1.46 * 104 g 
D)  1.56 * 104 g 
E)  None of the above 
A)  1.26 * 104 g 
B)  1.36 * 104 g 
C)  1.46 * 104 g 
D)  1.56 * 104 g 
E)  None of the above

Question 15

Dry ice (carbon dioxide) changes from a solid to a gas at -78.5$\circ$C. What is this temperature in $\circ$F

Accepted Answer

A)  -173$\circ$F 
B)  -12.6$\circ$F 
C)  -109$\circ$F 
D)  -75.6$\circ$F 
E)  none of them are within 2$\circ$F of the right answer 
A)  -173$\circ$F 
B)  -12.6$\circ$F 
C)  -109$\circ$F 
D)  -75.6$\circ$F 
E)  none of them are within 2$\circ$F of the right answer

Question 16

Convert 2.340 x 10-4 to decimal format.

Accepted Answer

A)  23,400 
B)  2,340 
C)  0.000234 
D)  0.0002340 
E)  0.002340 
A)  23,400 
B)  2,340 
C)  0.000234 
D)  0.0002340 
E)  0.002340

Question 17

Table salt is an element.

Accepted Answer

A) True 
 B)False

Question 18

Suppose a house has a floor area of 2,250 square feet. What is this area in units of square centimeters

Accepted Answer

A)  2.42 cm2 
B)  2.09 * 106 cm2 
C)  5.02 * 104 cm2 
D)  6.86 * 104 cm2 
E)  101 cm2 
A)  2.42 cm2 
B)  2.09 * 106 cm2 
C)  5.02 * 104 cm2 
D)  6.86 * 104 cm2 
E)  101 cm2

Question 19

A microliter corresponds to:

Accepted Answer

A)  10-2 liters. 
B)  10-3 liters. 
C)  10-6 liters. 
D)  10-9 liters. 
E)  10-12 liters. 
A)  10-2 liters. 
B)  10-3 liters. 
C)  10-6 liters. 
D)  10-9 liters. 
E)  10-12 liters.

Question 20

What is the volume of a 2.5 g block of metal if its density is 4.75 g/cm3

Accepted Answer

A)  0.53 cm3 
B)  1.9 cm3 
C)  2.5 cm3 
D)  4.75 cm3 
E)  11.9 cm3 
A)  0.53 cm3 
B)  1.9 cm3 
C)  2.5 cm3 
D)  4.75 cm3 
E)  11.9 cm3

Exam 1: Chemistry: The Study of Change

Brewed coffee is a pure substance.

Convert 4.6 km to mm.

How many cubic centimeters of an ore containing only 0.22% gold (by mass) must be processed to obtain $100.00 worth of gold The density of the ore is 8.0 g/cm3 and the price of gold is $818 per troy ounce. (14.6 troy oz = 1.0 ordinary pound, called an avoirdupois pound; 1 lb = 454 g)

An American engineer who had been transferred to Europe was asked to build bridge pilings exactly as he had in the United States. Each piling required 20.0 cubic yards of concrete in the United States. How many cubic meters of concrete are required for each piling Given: 1yd = 0.914 m.

In the process of fixing breakfast you: 1) break open the egg 2) fry it 3) cut the fried egg into pieces 4) cut toast in half Which one of these is a chemical process

Iced tea is a mixture.

Give the correct number of significant figures and units to the problem below. 4.51 m x 3.2 m =

You just measured a block of wood and obtained the following information: mass = 55.120 g Length = 8.5 cm Height = 4.3 cm Width = 3.3 cm Determine the volume and density of the wood block.

The fashioning of a piece of wood into a table leg is a physical change.

An organic liquid has a density of 1.2 g/cm3. What is the mass of a 35.0 cm3 sample of this liquid

When bacteria changes milk to yogurt it is a chemical change.

A tentative explanation for a set of observations that can be tested by further experimentation is referred to as

What is the mass of 1.00 dm3 of mercury The density of mercury is 13.6 g/cm3.

Dry ice (carbon dioxide) changes from a solid to a gas at -78.5 ∘\circ∘ C. What is this temperature in ∘\circ∘ F

Convert 2.340 x 10-4 to decimal format.

Table salt is an element.

Suppose a house has a floor area of 2,250 square feet. What is this area in units of square centimeters

A microliter corresponds to:

What is the volume of a 2.5 g block of metal if its density is 4.75 g/cm3

Atoms Molecules and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Gases

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Periodic Relationships Among the Elements

Chemical Bonding I: Basic Concepts

Chemical Bonding II: Molecular Geometry and Hybridization of Atomic

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Chemistry in the Atmosphere

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metals Chemistry and Coordination Compounds

Organic Chemistry

Synthetic and Natural Organic Polymers

Filters

How many cubic centimeters of an ore containing only 0.22% gold (by mass) must be processed to obtain $100.00 worth of gold The density of the ore is 8.0 g/cm³ and the price of gold is $818 per troy ounce. (14.6 troy oz = 1.0 ordinary pound, called an avoirdupois pound; 1 lb = 454 g)

An organic liquid has a density of 1.2 g/cm³. What is the mass of a 35.0 cm³ sample of this liquid

What is the mass of 1.00 dm³ of mercury The density of mercury is 13.6 g/cm³.

Dry ice (carbon dioxide) changes from a solid to a gas at -78.5^$\circ$C. What is this temperature in ^$\circ$F

Convert 2.340 x 10^-4 to decimal format.

What is the volume of a 2.5 g block of metal if its density is 4.75 g/cm³