Question 1

Which of the following represents a chemical property of copper metal?

Accepted Answer

A)  Copper metal conducts heat. 
B)  Copper metal reacts with nitric acid to produce copper(II) nitrate. 
C)  Copper metal melts at 1085°C. 
D)  Copper metal conducts electricity. 
E)  Copper metal has an orange color. 
A)  Copper metal conducts heat. 
B)  Copper metal reacts with nitric acid to produce copper(II) nitrate. 
C)  Copper metal melts at 1085°C. 
D)  Copper metal conducts electricity. 
E)  Copper metal has an orange color. B

Question 2

Which of the following represents a physical property of water?

Accepted Answer

A)  Water boils at 100°C. 
B)  An electrical current decomposes water into hydrogen gas and oxygen gas. 
C)  Water reacts with iron metal and oxygen to form rust. 
D)  Water reacts with carbon monoxide to form carbon dioxide and hydrogen gas. 
E)  Water is used in photosynthesis. 
A)  Water boils at 100°C. 
B)  An electrical current decomposes water into hydrogen gas and oxygen gas. 
C)  Water reacts with iron metal and oxygen to form rust. 
D)  Water reacts with carbon monoxide to form carbon dioxide and hydrogen gas. 
E)  Water is used in photosynthesis. A

Question 3

An irregularly shaped metal object with a mass of 25.43 g was placed in a graduated cylinder with water. The before and after volumes are shown below. What is the density of the metal?

Accepted Answer

A)  2.8 g/cm3 
B)  2.906 g/cm3 
C)  0.782 g/cm3 
D)  0.344 g/cm3 
E)  2.734 g/cm3 
A)  2.8 g/cm3 
B)  2.906 g/cm3 
C)  0.782 g/cm3 
D)  0.344 g/cm3 
E)  2.734 g/cm3 A

Question 4

Which statement correctly describes the properties of a gas?

Accepted Answer

A)  A gas does not occupy the entire volume of the container and is not highly compressible. 
B)  A gas occupies the entire volume of the container and is highly compressible. 
C)  A gas is highly ordered, and the molecules do not move about in the container. 
D)  A gas has a definite volume and shape. 
E)  A gas takes the shape of the container but is not highly compressible. 
A)  A gas does not occupy the entire volume of the container and is not highly compressible. 
B)  A gas occupies the entire volume of the container and is highly compressible. 
C)  A gas is highly ordered, and the molecules do not move about in the container. 
D)  A gas has a definite volume and shape. 
E)  A gas takes the shape of the container but is not highly compressible.

Question 5

This problem is from a New York Times article. Researchers tested a group of 28 doctors. The doctors were told that a 5-year-old child suffering a potentially fatal allergic reaction to peanuts needed an emergency injection of 0.12 mg of epinephrine. The bottle of epinephrine is labeled 1 mg in 1 mL of solution. What volume of this solution would you inject if you were the doctor?

Accepted Answer

A)  0.12 mL 
B)  120 mL 
C)  1.2 *10-4 mL 
D)  12 mL 
E)  1.2 mL 
A)  0.12 mL 
B)  120 mL 
C)  1.2 *10-4 mL 
D)  12 mL 
E)  1.2 mL

Question 6

In the movie The Italian Job, thieves steal gold bullion. One plan was to carry the ingots of gold off in suitcases. If each suitcase were 24 inches *18 inches*12 inches, approximately how much would each suitcase weigh when filled with gold? The molar mass of gold is 197 g/mol, the density of gold is 19.3 g/cm3, 1 in = 2.54 cm, and 1 kg = 2.20 lb.

Accepted Answer

A)  3,600 lb 
B)  560 lb 
C)  2,200 lb 
D)  280 lb 
E)  1,800 lb 
A)  3,600 lb 
B)  560 lb 
C)  2,200 lb 
D)  280 lb 
E)  1,800 lb

Question 7

Molecules are represented in various ways. Which statement A-D about molecular representations is not correct.

Accepted Answer

A)  A molecular or chemical formula identifies the elements and the number of atoms of each that comprise a molecule of a compound. 
B)  A structural formula shows how the atoms are bonded together but does not necessarily indicate the bond angles or three-dimensional shape of the molecule. 
C)  A ball-and-stick model shows bond angles and the three-dimensional shape of a molecule. 
D)  A space-filling model best represents the size of the atoms and distribution of electrons in a molecule. 
E)  Statements A-D all are correct. 
A)  A molecular or chemical formula identifies the elements and the number of atoms of each that comprise a molecule of a compound. 
B)  A structural formula shows how the atoms are bonded together but does not necessarily indicate the bond angles or three-dimensional shape of the molecule. 
C)  A ball-and-stick model shows bond angles and the three-dimensional shape of a molecule. 
D)  A space-filling model best represents the size of the atoms and distribution of electrons in a molecule. 
E)  Statements A-D all are correct.

Question 8

How thick is a square piece of aluminum foil that measures 5 cm on each side and has a mass of
675 mg? The density of aluminum is 2.70 g/cm3.

Accepted Answer

A)  1.0 mm 
B)  0.1 mm 
C)  0.01 mm 
D)  10 $\mu$m 
E)  1.0 $\mu$m 
A)  1.0 mm 
B)  0.1 mm 
C)  0.01 mm 
D)  10 $\mu$m 
E)  1.0 $\mu$m

Question 9

The symbol and name corresponding to the factor 10-6 is

Accepted Answer

A)  f, femto 
B)  p, pico 
C)  n, nano 
D)  ($\mu$, micro) 
E)  m, milli 
A)  f, femto 
B)  p, pico 
C)  n, nano 
D)  ($\mu$, micro) 
E)  m, milli

Question 10

The law of constant composition states that _________

Accepted Answer

A)  compounds such as NO2 and SO2 have identical chemical properties. 
B)  the elements forming a particular compound always combine in the same proportions. 
C)  nitrogen and oxygen can combine to form NO or NO2. 
D)  compounds such as NO and NO2 have identical chemical properties.  
E)  only one compound can be produced when two elements combine. 
A)  compounds such as NO2 and SO2 have identical chemical properties. 
B)  the elements forming a particular compound always combine in the same proportions. 
C)  nitrogen and oxygen can combine to form NO or NO2. 
D)  compounds such as NO and NO2 have identical chemical properties.  
E)  only one compound can be produced when two elements combine.

Question 11

Usain Bolt holds the world record for the 100 m dash at 9.58 s. What was his average speed in miles/hour for this distance? The equivalence statements are 1 km = 0.621 mi and 3,600 s = 1 hr. It is interesting to compare this value with the average speed for walking (3 mph), bicycling (12 mph), and horse racing (38 mph).

Accepted Answer

A)  23.3 mi/hr 
B)  46.6 mi/hr 
C)  11.7 mi/hr 
D)  18.7 mi/hr 
E)  26.7 mi/hr 
A)  23.3 mi/hr 
B)  46.6 mi/hr 
C)  11.7 mi/hr 
D)  18.7 mi/hr 
E)  26.7 mi/hr

Question 12

Which one of the following is not a physical property?

Accepted Answer

A)  flammability 
B)  electrical conductivity 
C)  color 
D)  density 
E)  boiling point 
A)  flammability 
B)  electrical conductivity 
C)  color 
D)  density 
E)  boiling point

Question 13

At what temperature do the Celsius and Fahrenheit scales read the same?

Accepted Answer

A)  40° 
B)  - 40° 
C)  11.4° 
D)  - 11.4° 
E)  There is no temperature at which the two scales read the same. 
A)  40° 
B)  - 40° 
C)  11.4° 
D)  - 11.4° 
E)  There is no temperature at which the two scales read the same.

Question 14

In 1 second, light can travel 2.998 * 108 m. How many inches does light travel in 1 femtosecond
(1 fs = 10-15 s, 1 inch = 2.54 cm exactly)?

Accepted Answer

A)  1180 in 
B)  11.80 in 
C)  1.180 in 
D)  1.180 *10-5 in 
E)  1.180 *10-7 in 
A)  1180 in 
B)  11.80 in 
C)  1.180 in 
D)  1.180 *10-5 in 
E)  1.180 *10-7 in

Question 15

Which of the following mixtures can be separated by filtration?

Accepted Answer

A)  sugar dissolved in coffee 
B)  sand and water 
C)  gasoline 
D)  alcohol dissolved in water 
E)  air 
A)  sugar dissolved in coffee 
B)  sand and water 
C)  gasoline 
D)  alcohol dissolved in water 
E)  air

Question 16

Which one of the following is not equal to exactly one cubic meter (1 m3)?

Accepted Answer

A)  106 cm3 
B)  103 L 
C)  109 mm3 
D)  106 mL 
E)  100 dm3 
A)  106 cm3 
B)  103 L 
C)  109 mm3 
D)  106 mL 
E)  100 dm3

Question 17

The density of iron is 7.9 g/cm3. What is the volume of a 4.5 kg iron block?

Accepted Answer

A)  570 cm3 
B)  0.570 cm3 
C)  3.56* 104 cm3 
D)  35.6 cm3 
E)  1.76 cm3 
A)  570 cm3 
B)  0.570 cm3 
C)  3.56* 104 cm3 
D)  35.6 cm3 
E)  1.76 cm3

Question 18

Cheetahs can run at speeds of up to 60 mi per hour. How many seconds does it take a cheetah to run 10 m at this speed? (1 mi = 1.609 km)

Accepted Answer

A)  0.37 s 
B)  0.10 s 
C)  56 s 
D)  18 s 
E)  0.43 s 
A)  0.37 s 
B)  0.10 s 
C)  56 s 
D)  18 s 
E)  0.43 s

Question 19

Liquid nitrogen boils at 77 K. What is this temperature in °F?

Accepted Answer

A)  -196°F 
B)  -321°F 
C)  -256°F 
D)  -77°F 
E)  -352°F 
A)  -196°F 
B)  -321°F 
C)  -256°F 
D)  -77°F 
E)  -352°F

Question 20

On a summer day, the temperature in Phoenix, Arizona, was recorded as 110°F. What is this temperature in °C?

Accepted Answer

A)  43°C 
B)  78°C 
C)  166°C 
D)  93°C 
E)  29°C 
A)  43°C 
B)  78°C 
C)  166°C 
D)  93°C 
E)  29°C

Which of the following represents a chemical property of copper metal?

Which of the following represents a physical property of water?

An irregularly shaped metal object with a mass of 25.43 g was placed in a graduated cylinder with water. The before and after volumes are shown below. What is the density of the metal?

Which statement correctly describes the properties of a gas?

Molecules are represented in various ways. Which statement A-D about molecular representations is not correct.

How thick is a square piece of aluminum foil that measures 5 cm on each side and has a mass of 675 mg? The density of aluminum is 2.70 g/cm³.

The symbol and name corresponding to the factor 10^-⁶ is

The law of constant composition states that _________

Which one of the following is not a physical property?

At what temperature do the Celsius and Fahrenheit scales read the same?

In 1 second, light can travel 2.998 * 10⁸ m. How many inches does light travel in 1 femtosecond (1 fs = 10^-¹⁵ s, 1 inch = 2.54 cm exactly)?

Which of the following mixtures can be separated by filtration?

Which one of the following is not equal to exactly one cubic meter (1 m³)?

The density of iron is 7.9 g/cm³. What is the volume of a 4.5 kg iron block?

Cheetahs can run at speeds of up to 60 mi per hour. How many seconds does it take a cheetah to run 10 m at this speed? (1 mi = 1.609 km)

Liquid nitrogen boils at 77 K. What is this temperature in °F?

On a summer day, the temperature in Phoenix, Arizona, was recorded as 110°F. What is this temperature in °C?

Atoms, Ions, and Molecules: Matter Starts Here

Stoichiometry: Mass, Formulas, and Reactions

Solution Chemistry: The Hydrosphere

Thermochemistry: Energy Changes in Reactions

Properties of Gases: the Air We Breathe

A Quantum Model of Atoms: Waves and Particles

Chemical Bonds: What Makes a Gas a Greenhouse Gas

Molecular Geometry: Shape Determines Function

Intermolecular Forces: The Uniqueness of Water

Solutions: Properties and Behavior

Solids: Structures and Applications

Organic Chemistry: Fuels, Pharmaceuticals, Materials, and Life

Chemical Kinetics: Reactions in the Air We Breathe

Chemical Equilibrium: How Much Product Does a Reaction Really Make

Acid-Base and Solubility Equilibria: Reactions in Soil and Water

Metal Ions: Colorful and Essential

Thermodynamics: Spontaneous and Nonspontaneous Reactions and Processes

Electrochemistry: the Quest for Clean Energy

Biochemistry: the Compounds of Life

Nuclear Chemistry: Applications to Energy and Medicine

Life and the Periodic Table

Filters

Exam 1: Matter and Energy: The Origin of the Universe

Which of the following represents a chemical property of copper metal?

Which of the following represents a physical property of water?

An irregularly shaped metal object with a mass of 25.43 g was placed in a graduated cylinder with water. The before and after volumes are shown below. What is the density of the metal?

Which statement correctly describes the properties of a gas?

Molecules are represented in various ways. Which statement A-D about molecular representations is not correct.

How thick is a square piece of aluminum foil that measures 5 cm on each side and has a mass of 675 mg? The density of aluminum is 2.70 g/cm3.

The symbol and name corresponding to the factor 10-6 is

The law of constant composition states that _________

Which one of the following is not a physical property?

At what temperature do the Celsius and Fahrenheit scales read the same?

In 1 second, light can travel 2.998 * 108 m. How many inches does light travel in 1 femtosecond (1 fs = 10-15 s, 1 inch = 2.54 cm exactly)?

Which of the following mixtures can be separated by filtration?

Which one of the following is not equal to exactly one cubic meter (1 m3)?

The density of iron is 7.9 g/cm3. What is the volume of a 4.5 kg iron block?

Cheetahs can run at speeds of up to 60 mi per hour. How many seconds does it take a cheetah to run 10 m at this speed? (1 mi = 1.609 km)

Liquid nitrogen boils at 77 K. What is this temperature in °F?

On a summer day, the temperature in Phoenix, Arizona, was recorded as 110°F. What is this temperature in °C?

Atoms, Ions, and Molecules: Matter Starts Here

Stoichiometry: Mass, Formulas, and Reactions

Solution Chemistry: The Hydrosphere

Thermochemistry: Energy Changes in Reactions

Properties of Gases: the Air We Breathe

A Quantum Model of Atoms: Waves and Particles

Chemical Bonds: What Makes a Gas a Greenhouse Gas

Molecular Geometry: Shape Determines Function

Intermolecular Forces: The Uniqueness of Water

Solutions: Properties and Behavior

Solids: Structures and Applications

Organic Chemistry: Fuels, Pharmaceuticals, Materials, and Life

Chemical Kinetics: Reactions in the Air We Breathe

Chemical Equilibrium: How Much Product Does a Reaction Really Make

Acid-Base and Solubility Equilibria: Reactions in Soil and Water

Metal Ions: Colorful and Essential

Thermodynamics: Spontaneous and Nonspontaneous Reactions and Processes

Electrochemistry: the Quest for Clean Energy

Biochemistry: the Compounds of Life

Nuclear Chemistry: Applications to Energy and Medicine

Life and the Periodic Table

Filters

How thick is a square piece of aluminum foil that measures 5 cm on each side and has a mass of 675 mg? The density of aluminum is 2.70 g/cm³.

The symbol and name corresponding to the factor 10^-⁶ is

In 1 second, light can travel 2.998 * 10⁸ m. How many inches does light travel in 1 femtosecond (1 fs = 10^-¹⁵ s, 1 inch = 2.54 cm exactly)?

Which one of the following is not equal to exactly one cubic meter (1 m³)?

The density of iron is 7.9 g/cm³. What is the volume of a 4.5 kg iron block?