Question 1

What is the volume of a container that contains 14.3 g of a substance having a density of 0.988 g/cm3?

Accepted Answer

A)  14.1 cm3 
B)  0.0691 cm3 
C)  14.5 cm3 
D)  141 cm3 
E)  691 cm3 
A)  14.1 cm3 
B)  0.0691 cm3 
C)  14.5 cm3 
D)  141 cm3 
E)  691 cm3

Question 2

The boiling point for liquid helium is 4.0 K. What is the temperature in degrees Fahrenheit?

Accepted Answer

A)  -452.5°F 
B)  -498.9°F 
C)  -237.2°F 
D)  131.8°F 
E)  530.9°F 
A)  -452.5°F 
B)  -498.9°F 
C)  -237.2°F 
D)  131.8°F 
E)  530.9°F

Question 3

A ________ mixture does not have a uniform composition throughout.

Accepted Answer

A)  heterogeneous 
B)  homologous 
C)  homogeneous 
D)  heterologous 
A)  heterogeneous 
B)  homologous 
C)  homogeneous 
D)  heterologous

Question 4

Which of these is an example of a physical property?

Accepted Answer

A)  Corrosiveness of sulfuric acid 
B)  Toxicity of cyanide 
C)  Flammability of gasoline 
D)  Neutralization of stomach acid with an antacid 
E)  Lead becomes a liquid when heated to 601°C. 
A)  Corrosiveness of sulfuric acid 
B)  Toxicity of cyanide 
C)  Flammability of gasoline 
D)  Neutralization of stomach acid with an antacid 
E)  Lead becomes a liquid when heated to 601°C.

Question 5

If a patient in the hospital is running a temperature of 39.5°C, what is this in degrees Fahrenheit?

Accepted Answer

A)  99°F 
B)  101.3°F 
C)  102.4°F 
D)  103.1°F 
E)  104°F 
A)  99°F 
B)  101.3°F 
C)  102.4°F 
D)  103.1°F 
E)  104°F

Question 6

________ is the term used to indicate a measuring device is accurate.

Accepted Answer

Graduated

Question 7

A(n)________ is a substance that cannot be separated into simpler substances by chemical means.

Accepted Answer

The answer of A(n)________ is a substance that cannot be...

Question 8

The SI base unit of mass is

Accepted Answer

A)  mg. 
B)  g. 
C)  kg. 
D)  metric ton. 
E)  lb. 
A)  mg. 
B)  g. 
C)  kg. 
D)  metric ton. 
E)  lb.

Question 9

What is the length of the box, using the proper number of significant figures and units?

Accepted Answer

A)  5.5 cm 
B)  5 cm 
C)  6 cm 
D)  5.67 cm 
E)  5.6 cm 
A)  5.5 cm 
B)  5 cm 
C)  6 cm 
D)  5.67 cm 
E)  5.6 cm

Question 10

When applying the scientific method, it is important to avoid any form of hypothesis.

Accepted Answer

A) True 
 B)False

Question 11

Give an example of an intensive property.

Accepted Answer

(Answers will vary.)

Question 12

A(n) ________ is a substance composed of atoms of two or more elements chemically united in fixed proportions.

Accepted Answer

The answer of A(n) ________ is a substance composed of...

Question 13

Explain the difference between a heterogeneous mixture and a homogeneous mixture.

Accepted Answer

A homogeneous mixture has a un

Question 14

Some molecules move with speeds approaching the "escape velocity" from Earth, which is 7.0 miles per second. What is this speed in cm/h? (1 mi = 1609 m)

Accepted Answer

A)  313 cm/h 
B)  4.1 × 105 cm/h 
C)  4.1 × 109 cm/h 
D)  1.1 × 106 cm/h 
E)  1.6 × 109 cm/h 
A)  313 cm/h 
B)  4.1 × 105 cm/h 
C)  4.1 × 109 cm/h 
D)  1.1 × 106 cm/h 
E)  1.6 × 109 cm/h

Question 15

50.0 grams of acetic acid are required for an experiment. What volume, in milliliters, of a 1.105 g/cm3 acetic acid solution must be measured for the experiment?

Accepted Answer

A)  0.0452 mL 
B)  45.2 mL 
C)  55.3 mL 
D)  0.452 mL 
E)  4.52 mL 
A)  0.0452 mL 
B)  45.2 mL 
C)  55.3 mL 
D)  0.452 mL 
E)  4.52 mL

Question 16

77 K is colder than 4 K.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following is a chemical change?

Accepted Answer

A)  Boiling water 
B)  Melting wax 
C)  Broiling a steak on a grill 
D)  Condensing water vapor into rainfall 
E)  Carving a piece of wood 
A)  Boiling water 
B)  Melting wax 
C)  Broiling a steak on a grill 
D)  Condensing water vapor into rainfall 
E)  Carving a piece of wood

Question 18

Which of the following correctly expresses 52.068881 in scientific notation, rounded to three significant figures?

Accepted Answer

A)  5.21 × 10-1 
B)  5.20 × 10-1 
C)  5.21 × 101  
D)  5.20 × 101 
E)  5.21 × 102 
A)  5.21 × 10-1 
B)  5.20 × 10-1 
C)  5.21 × 101  
D)  5.20 × 101 
E)  5.21 × 102

Question 19

Which of the following is an extensive property?

Accepted Answer

A)  Density 
B)  Temperature 
C)  Mass 
D)  Specific Heat 
E)  Pressure 
A)  Density 
B)  Temperature 
C)  Mass 
D)  Specific Heat 
E)  Pressure

Question 20

Which of the following is a 'substance' according to the definition given in your textbook?

Accepted Answer

A)  Air 
B)  Tap water 
C)  Sea water 
D)  Water 
E)  Toothpaste 
A)  Air 
B)  Tap water 
C)  Sea water 
D)  Water 
E)  Toothpaste

Exam 1: Chemistry: the Central Science

What is the volume of a container that contains 14.3 g of a substance having a density of 0.988 g/cm3?

The boiling point for liquid helium is 4.0 K. What is the temperature in degrees Fahrenheit?

A ________ mixture does not have a uniform composition throughout.

Which of these is an example of a physical property?

If a patient in the hospital is running a temperature of 39.5°C, what is this in degrees Fahrenheit?

________ is the term used to indicate a measuring device is accurate.

A(n)________ is a substance that cannot be separated into simpler substances by chemical means.

The SI base unit of mass is

What is the length of the box, using the proper number of significant figures and units?

When applying the scientific method, it is important to avoid any form of hypothesis.

Give an example of an intensive property.

A(n) ________ is a substance composed of atoms of two or more elements chemically united in fixed proportions.

Explain the difference between a heterogeneous mixture and a homogeneous mixture.

Some molecules move with speeds approaching the "escape velocity" from Earth, which is 7.0 miles per second. What is this speed in cm/h? (1 mi = 1609 m)

50.0 grams of acetic acid are required for an experiment. What volume, in milliliters, of a 1.105 g/cm3 acetic acid solution must be measured for the experiment?

77 K is colder than 4 K.

Which of the following is a chemical change?

Which of the following correctly expresses 52.068881 in scientific notation, rounded to three significant figures?

Which of the following is an extensive property?

Which of the following is a 'substance' according to the definition given in your textbook?

Atoms, Molecules, and Ions

Stoichiometry: Ratios of Combination

Reactions in Aqueous Solutions

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Electron Configuration and the Periodic Table

Chemical Bonding I: Basic Concepts

Chemical Bonding II: Molecular Geometry and Bonding Theories

Gases

Intermolecular Forces and the Physical Properties of Liquids and Solids

Modern Materials

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

Environmental Chemistry

Coordination Chemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Organic Chemistry

Filters

What is the volume of a container that contains 14.3 g of a substance having a density of 0.988 g/cm³?

50.0 grams of acetic acid are required for an experiment. What volume, in milliliters, of a 1.105 g/cm³acetic acid solution must be measured for the experiment?