Question 1

How many kL does a 1.25 × 108 cL sample contain?

Accepted Answer

A)  1.25 × 103 kL 
B)  1.25 × 1013 kL 
C)  1.25 × 104 kL 
D)  1.25 × 1012 kL 
E)  1.25 × 102 kL 
A)  1.25 × 103 kL 
B)  1.25 × 1013 kL 
C)  1.25 × 104 kL 
D)  1.25 × 1012 kL 
E)  1.25 × 102 kL

Question 2

Define energy.

Accepted Answer

Energy is

Question 3

A substance composed of two or more elements in a fixed, definite proportion is ________.

Accepted Answer

A)  a homogeneous mixture 
B)  a heterogeneous mixture 
C)  a compound 
D)  a solution 
E)  an alloy 
A)  a homogeneous mixture 
B)  a heterogeneous mixture 
C)  a compound 
D)  a solution 
E)  an alloy

Question 4

Convert 4 μm to metres.

Accepted Answer

A)  4 × 10-9 m 
B)  4 × 10-6 m 
C)  4 × 10-3 m 
D)  4 × 106 m 
A)  4 × 10-9 m 
B)  4 × 10-6 m 
C)  4 × 10-3 m 
D)  4 × 106 m

Question 5

If the outside air temperature is 30 °F, what is the temperature in kelvin?

Accepted Answer

A)  303 K 
B)  307 K 
C)  274 K 
D)  272 K 
A)  303 K 
B)  307 K 
C)  274 K 
D)  272 K

Question 6

Convert 12.5 μL to L and express it in scientific notation.

Accepted Answer

A)  1.25*105 L 
B)  1.25*107 L 
C)  1.25*10-3 L 
D)  1.25*10-7 L 
E)  1.25*10-5 L 
A)  1.25*105 L 
B)  1.25*107 L 
C)  1.25*10-3 L 
D)  1.25*10-7 L 
E)  1.25*10-5 L

Question 7

Which of the following is an example of a physical change?

Accepted Answer

A)  Dew forms on a blade of grass. 
B)  A Halloween light stick glows after shaking. 
C)  An egg solidifies during cooking. 
D)  A hydrogen balloon explodes when contacted with a flame. 
E)  None of the above is a physical change. 
A)  Dew forms on a blade of grass. 
B)  A Halloween light stick glows after shaking. 
C)  An egg solidifies during cooking. 
D)  A hydrogen balloon explodes when contacted with a flame. 
E)  None of the above is a physical change.

Question 8

Which of the following is an example of intensive properties?

Accepted Answer

A)  density 
B)  volume 
C)  mass 
D)  None of the above is an example of intensive properties. 
E)  All of the above are examples of intensive properties. 
A)  density 
B)  volume 
C)  mass 
D)  None of the above is an example of intensive properties. 
E)  All of the above are examples of intensive properties.

Question 9

Which of the following numbers has the greatest number of significant figures?

Accepted Answer

A)  0. 5070 
B)  0 .201 
C)  418000 
D)  6.02 × 1024 
A)  0. 5070 
B)  0 .201 
C)  418000 
D)  6.02 × 1024

Question 10

Two or more substances in variable proportions, where the composition is variable throughout, are ________.

Accepted Answer

A)  a solution 
B)  a homogeneous mixture 
C)  a compound 
D)  an amorphous solid 
E)  a heterogeneous mixture 
A)  a solution 
B)  a homogeneous mixture 
C)  a compound 
D)  an amorphous solid 
E)  a heterogeneous mixture

Question 11

A piece of metal ore weighs 8.25 g. When a student places it into a graduated cylinder containing water, the liquid level rises from 21.25 mL to 26.47 mL. What is the density of the ore?

Accepted Answer

A)  0.3 12 g mL-1 
B)  0. 633 g mL-1 
C)  1. 58 g mL-1 
D)  3.21 g mL-1 
A)  0.3 12 g mL-1 
B)  0. 633 g mL-1 
C)  1. 58 g mL-1 
D)  3.21 g mL-1

Question 12

Convert 1.34 km2 to m2.

Accepted Answer

A)  1340000 m2 
B)  134000 m2 
C)  1.34 × 107 m2 
D)  1.34 × 104 m2 
E)  1340 m2 
A)  1340000 m2 
B)  134000 m2 
C)  1.34 × 107 m2 
D)  1.34 × 104 m2 
E)  1340 m2

How many kL does a 1.25 × 10⁸ cL sample contain?

Define energy.

A substance composed of two or more elements in a fixed, definite proportion is ________.

Convert 4 μm to metres.

If the outside air temperature is 30 °F, what is the temperature in kelvin?

Convert 12.5 μL to L and express it in scientific notation.

Which of the following is an example of a physical change?

Which of the following is an example of intensive properties?

Which of the following numbers has the greatest number of significant figures?

Two or more substances in variable proportions, where the composition is variable throughout, are ________.

A piece of metal ore weighs 8.25 g. When a student places it into a graduated cylinder containing water, the liquid level rises from 21.25 mL to 26.47 mL. What is the density of the ore?

Convert 1.34 km² to m².

Atoms and Elements

Molecules, Compounds, and Nomenclature

Chemical Reactions and Stoichiometry

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes, Valence Bond Theory, and Molecular Orbital Theory

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry I: Structures

Organic Chemistry Ii: Reactions

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

Exam 1: Units of Measurement for Physical and Chemical Change

How many kL does a 1.25 × 108 cL sample contain?

Define energy.

A substance composed of two or more elements in a fixed, definite proportion is ________.

Convert 4 μm to metres.

If the outside air temperature is 30 °F, what is the temperature in kelvin?

Convert 12.5 μL to L and express it in scientific notation.

Which of the following is an example of a physical change?

Which of the following is an example of intensive properties?

Which of the following numbers has the greatest number of significant figures?

Two or more substances in variable proportions, where the composition is variable throughout, are ________.

A piece of metal ore weighs 8.25 g. When a student places it into a graduated cylinder containing water, the liquid level rises from 21.25 mL to 26.47 mL. What is the density of the ore?

Convert 1.34 km2 to m2.

Atoms and Elements

Molecules, Compounds, and Nomenclature

Chemical Reactions and Stoichiometry

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes, Valence Bond Theory, and Molecular Orbital Theory

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry I: Structures

Organic Chemistry Ii: Reactions

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

How many kL does a 1.25 × 10⁸ cL sample contain?

Convert 1.34 km² to m².