Question 1

16 megagrams (Mg) is equal to 1.6 * 107 g.

Accepted Answer

A) True 
 B)False

Question 2

All of the following are properties of sodium. Which one is a physical property of sodium

Accepted Answer

A)  It's surface turns black when first exposed to air. 
B)  It is a solid at 25$\circ$C and changes to a liquid when heated to 98$\circ$C. 
C)  When placed in water it sizzles and a gas is formed. 
D)  When placed in contact with chlorine it forms a compound that melts at 801$\circ$C. 
E)  Sodium is never found as the pure metal in nature. 
A)  It's surface turns black when first exposed to air. 
B)  It is a solid at 25$\circ$C and changes to a liquid when heated to 98$\circ$C. 
C)  When placed in water it sizzles and a gas is formed. 
D)  When placed in contact with chlorine it forms a compound that melts at 801$\circ$C. 
E)  Sodium is never found as the pure metal in nature.

Question 3

Which one of the following is an example of a physical property

Accepted Answer

A)  dynamite explodes 
B)  meat rots if it is not refrigerated 
C)  gasoline burns 
D)  ice floats on top of liquid water 
E)  a silver platter tarnishes 
A)  dynamite explodes 
B)  meat rots if it is not refrigerated 
C)  gasoline burns 
D)  ice floats on top of liquid water 
E)  a silver platter tarnishes

Question 4

A soft drink costs 75 cents for a 12-oz can. A two-liter bottle costs $1.25. How much more expensive is the can compared to the two-liter bottle (1.0 L = 1.057 qt, 1 qt = 32 oz)

Accepted Answer

A)  The can is over two times more expensive by volume. 
B)  The can is over three times more expensive by volume. 
C)  The can is over four times more expensive by volume. 
D)  The can is over five times more expensive by volume. 
E)  None of the above 
A)  The can is over two times more expensive by volume. 
B)  The can is over three times more expensive by volume. 
C)  The can is over four times more expensive by volume. 
D)  The can is over five times more expensive by volume. 
E)  None of the above

Question 5

An excavator is preparing to dig a basement for a new house. Part of his contract reads that he must dispose of all the dirt he removes while digging the basement in an EPA approved landfill. He will dig a hole that is 40 feet wide by 50 feet long and 7.5 feet deep. He first uses his shovel and scoops up 1.00 kg of dirt, and then determines that the dirt as a volume of 600 cm3. The excavator knows that his dump truck can only carry 8,000 kg of dirt. How many dump-truck loads will it take to haul the dirt away

Accepted Answer

A)  89 dump-truck loads 
B)  95 dump-truck loads 
C)  99 dump-truck loads 
D)  101dump-truck loads 
E)  None of the above 
A)  89 dump-truck loads 
B)  95 dump-truck loads 
C)  99 dump-truck loads 
D)  101dump-truck loads 
E)  None of the above

Question 6

A unifying principle that explains a body of facts and relations 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 7

1 US barrel = 4.21 cubic feet. Express this volume in liters.

Accepted Answer

A)  3.99 * 10-5 L 
B)  1.99 * 10-2 L 
C)  19.9 L 
D)  105 L 
E)  119 L 
A)  3.99 * 10-5 L 
B)  1.99 * 10-2 L 
C)  19.9 L 
D)  105 L 
E)  119 L

Question 8

20$\circ$C is colder than 40$\circ$F.

Accepted Answer

A) True 
 B)False

Question 9

Express 7,500 nm as picometers.

Accepted Answer

A)  7.50 pm 
B)  75.0 pm 
C)  750 pm 
D)  7.5 * 106 pm 
E)  7.5 * 1012 pm 
A)  7.50 pm 
B)  75.0 pm 
C)  750 pm 
D)  7.5 * 106 pm 
E)  7.5 * 1012 pm

Question 10

0 K is the lowest temperature that can be attained theoretically.

Accepted Answer

A) True 
 B)False

Question 11

How many significant figures does the result of the following sum contain
8.5201 + 1.93

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 12

A spherical vessel (diameter = 5.00 cm) when empty has a mass of 12.00 g. What is the greatest volume of water that can be placed in the vessel and still have the vessel float at the surface of benzene (Given: density of water = 1.00 g/cm3; density of benzene = 0.879 g/cm3)

Accepted Answer

A)  45.5 mL 
B)  448 mL 
C)  53.4 mL 
D)  57.5 mL 
E)  65.4 mL 
A)  45.5 mL 
B)  448 mL 
C)  53.4 mL 
D)  57.5 mL 
E)  65.4 mL

Question 13

Hydrogen gas and nitrogen gas are combining to form ammonia gas is a chemical change.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following is an accurate definition of a pure substance

Accepted Answer

A)  A pure substance must be made of only one element 
B)  A pure substance must be a solid at room temperature 
C)  A pure substance will be transparent 
D)  A pure substance is matter that cannot be broken down into other matter 
E)  A pure substance is matter that has a definite composition 
A)  A pure substance must be made of only one element 
B)  A pure substance must be a solid at room temperature 
C)  A pure substance will be transparent 
D)  A pure substance is matter that cannot be broken down into other matter 
E)  A pure substance is matter that has a definite composition

Question 15

Liquid nitrogen boils at -195.8$\circ$C. Express the boiling point of liquid nitrogen in $\circ$F.

Accepted Answer

A)  -384.4$\circ$F 
B)  -352.4$\circ$F 
C)  -320.4$\circ$F 
D)  -140.8$\circ$F 
E)  -76.8$\circ$F 
A)  -384.4$\circ$F 
B)  -352.4$\circ$F 
C)  -320.4$\circ$F 
D)  -140.8$\circ$F 
E)  -76.8$\circ$F

16 megagrams (Mg) is equal to 1.6 * 10⁷ g.

All of the following are properties of sodium. Which one is a physical property of sodium

Which one of the following is an example of a physical property

A soft drink costs 75 cents for a 12-oz can. A two-liter bottle costs $1.25. How much more expensive is the can compared to the two-liter bottle (1.0 L = 1.057 qt, 1 qt = 32 oz)

A unifying principle that explains a body of facts and relations is referred to as

1 US barrel = 4.21 cubic feet. Express this volume in liters.

20^$\circ$C is colder than 40^$\circ$F.

Express 7,500 nm as picometers.

0 K is the lowest temperature that can be attained theoretically.

How many significant figures does the result of the following sum contain 8.5201 + 1.93

A spherical vessel (diameter = 5.00 cm) when empty has a mass of 12.00 g. What is the greatest volume of water that can be placed in the vessel and still have the vessel float at the surface of benzene (Given: density of water = 1.00 g/cm³; density of benzene = 0.879 g/cm³)

Hydrogen gas and nitrogen gas are combining to form ammonia gas is a chemical change.

Which of the following is an accurate definition of a pure substance

Liquid nitrogen boils at -195.8^$\circ$C. Express the boiling point of liquid nitrogen in ^$\circ$F.

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

Exam 1: Chemistry: The Study of Change

16 megagrams (Mg) is equal to 1.6 * 107 g.

All of the following are properties of sodium. Which one is a physical property of sodium

Which one of the following is an example of a physical property

A soft drink costs 75 cents for a 12-oz can. A two-liter bottle costs $1.25. How much more expensive is the can compared to the two-liter bottle (1.0 L = 1.057 qt, 1 qt = 32 oz)

A unifying principle that explains a body of facts and relations is referred to as

1 US barrel = 4.21 cubic feet. Express this volume in liters.

20 ∘\circ∘ C is colder than 40 ∘\circ∘ F.

Express 7,500 nm as picometers.

0 K is the lowest temperature that can be attained theoretically.

How many significant figures does the result of the following sum contain 8.5201 + 1.93

A spherical vessel (diameter = 5.00 cm) when empty has a mass of 12.00 g. What is the greatest volume of water that can be placed in the vessel and still have the vessel float at the surface of benzene (Given: density of water = 1.00 g/cm3; density of benzene = 0.879 g/cm3)

Hydrogen gas and nitrogen gas are combining to form ammonia gas is a chemical change.

Which of the following is an accurate definition of a pure substance

Liquid nitrogen boils at -195.8 ∘\circ∘ C. Express the boiling point of liquid nitrogen in ∘\circ∘ F.

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

16 megagrams (Mg) is equal to 1.6 * 10⁷ g.

20^$\circ$C is colder than 40^$\circ$F.

A spherical vessel (diameter = 5.00 cm) when empty has a mass of 12.00 g. What is the greatest volume of water that can be placed in the vessel and still have the vessel float at the surface of benzene (Given: density of water = 1.00 g/cm³; density of benzene = 0.879 g/cm³)

Liquid nitrogen boils at -195.8^$\circ$C. Express the boiling point of liquid nitrogen in ^$\circ$F.