Question 1

Select the best statement about chemistry before 1800.

Accepted Answer

A) Alchemy focused on objective experimentation rather than mystical explanations of processes. 
B) The phlogiston theory laid a valuable theoretical basis for modern chemistry. 
C) Lavoisier's quantitative work on the role of oxygen in combustion was the beginning of modern chemistry. 
D) The interpretation of data by alchemists was not biased by their overall view of life. 
E) Alchemists failed because they did not develop any practical chemical methods. 
A) Alchemy focused on objective experimentation rather than mystical explanations of processes. 
B) The phlogiston theory laid a valuable theoretical basis for modern chemistry. 
C) Lavoisier's quantitative work on the role of oxygen in combustion was the beginning of modern chemistry. 
D) The interpretation of data by alchemists was not biased by their overall view of life. 
E) Alchemists failed because they did not develop any practical chemical methods.

Question 2

The joule is the SI unit of energy and is equal to 1 kg m2 s−2. The erg is another energy unit, equal to 1 g cm2 s−2. Use unit conversion methods to work out how many ergs are in 1 joule.

Accepted Answer

A) 10 −1 ergs 
B) 10 ergs 
C) 10 2 ergs 
D) 10 5 ergs 
E) 10 7 ergs 
A) 10 −1 ergs 
B) 10 ergs 
C) 10 2 ergs 
D) 10 5 ergs 
E) 10 7 ergs

Question 3

The mass of a sample is 550 milligrams. Which of the following expresses that mass in kilograms?

Accepted Answer

A) 5.5 × 10 8 kg 
B) 5.5 × 10 5 kg 
C) 5.5 × 10 −4 kg 
D) 5.5 × 10 −6 kg 
E) 5.5 × 10 −1 kg 
A) 5.5 × 10 8 kg 
B) 5.5 × 10 5 kg 
C) 5.5 × 10 −4 kg 
D) 5.5 × 10 −6 kg 
E) 5.5 × 10 −1 kg

Question 4

The ripening of fruit, once picked, is an example of physical change.

Accepted Answer

A) True 
 B)False

Question 5

During the swing of a frictionless pendulum, what energy form(s) remain constant?

Accepted Answer

A) Kinetic energy only 
B) Potential energy only 
C) Both kinetic energy and potential energy 
D) Kinetic plus potential energy 
E) None of these choices are correct. 
A) Kinetic energy only 
B) Potential energy only 
C) Both kinetic energy and potential energy 
D) Kinetic plus potential energy 
E) None of these choices are correct.

Question 6

A detailed explanation of natural phenomena that is generally accepted and has been extensively tested is called a

Accepted Answer

A) theory. 
B) hypothesis. 
C) law. 
D) fact. 
E) postulate. 
A) theory. 
B) hypothesis. 
C) law. 
D) fact. 
E) postulate.

Question 7

If the density of a certain spherical atomic nucleus is 1.0 × 1014 g cm−3 and its mass is 2.0 × 10−23 g, what is its radius in cm?

Accepted Answer

A) 3.6 × 10 −13 cm 
B) 2.0 × 10 −37 cm 
C) 4.8 × 10 −38 cm 
D) 2.2 × 10 −19 cm 
E) None of these choices are correct. 
A) 3.6 × 10 −13 cm 
B) 2.0 × 10 −37 cm 
C) 4.8 × 10 −38 cm 
D) 2.2 × 10 −19 cm 
E) None of these choices are correct.

Question 8

The density of mercury, the only metal to exist as a liquid at room temperature, is 13.6 g/cm3. What is that density in pounds per cubic inch?

Accepted Answer

A) 849 lb/in 3 
B) 491 lb/in 3 
C) 376 lb/in 3 
D) 0.491 lb/in 3 
E) 1.83 × 10 − 3 lb/in 3 
A) 849 lb/in 3 
B) 491 lb/in 3 
C) 376 lb/in 3 
D) 0.491 lb/in 3 
E) 1.83 × 10 − 3 lb/in 3

Question 9

A flask has a mass of 78.23 g when empty and 593.63 g when filled with water. When the same flask is filled with concentrated sulfuric acid, H2SO4, its mass is 1026.57 g. What is the density of concentrated sulfuric acid? (Assume water has a density of 1.00 g/cm3 at the temperature of the measurement.)

Accepted Answer

A) 1.992 g/cm 3 
B) 1.840 g/cm 3 
C) 1.729 g/cm 3 
D) 1.598 g/cm 3 
E) 0.543 g/cm 3 
A) 1.992 g/cm 3 
B) 1.840 g/cm 3 
C) 1.729 g/cm 3 
D) 1.598 g/cm 3 
E) 0.543 g/cm 3

Question 10

Which measurement is expressed to 4 significant figures?

Accepted Answer

A) 0.423 kg 
B) 24.049 cm 
C) 1300 K 
D) 82,306 m 
E) 62.40 g 
A) 0.423 kg 
B) 24.049 cm 
C) 1300 K 
D) 82,306 m 
E) 62.40 g

Question 11

The symbol for 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.

Select the best statement about chemistry before 1800.

The joule is the SI unit of energy and is equal to 1 kg m² s⁻². The erg is another energy unit, equal to 1 g cm² s⁻². Use unit conversion methods to work out how many ergs are in 1 joule.

The mass of a sample is 550 milligrams. Which of the following expresses that mass in kilograms?

The ripening of fruit, once picked, is an example of physical change.

During the swing of a frictionless pendulum, what energy form(s) remain constant?

A detailed explanation of natural phenomena that is generally accepted and has been extensively tested is called a

If the density of a certain spherical atomic nucleus is 1.0 × 10¹⁴ g cm⁻³ and its mass is 2.0 × 10⁻²³ g, what is its radius in cm?

The density of mercury, the only metal to exist as a liquid at room temperature, is 13.6 g/cm³. What is that density in pounds per cubic inch?

Which measurement is expressed to 4 significant figures?

The symbol for the SI base unit of mass is

The Components of Matter

Stoichiometry of Formulas and Equations

Three Major Classes of Chemical Reactions

Gases and the Kinetic-Molecular Theory

Thermochemistry: Energy Flow and Chemical Change

Quantum Theory and Atomic Structure

Electron Configuration and Chemical Periodicity

Models of Chemical Bonding

The Shapes of Molecules

Theories of Covalent Bonding

Intermolecular Forces: Liquids, Solids, and Phase Changes

The Properties of Mixtures: Solutions and Colloids

Periodic Patterns in the Main-Group Elements

Organic Compounds and the Atomic Properties of Carbon

Kinetics: Rates and Mechanisms of Chemical Reactions

Equilibrium: the Extent of Chemical Reactions

Acid-Base Equilibria

Ionic Equilibria in Aqueous Systems

Thermodynamics: Entropy, Free Energy, and Reaction Direction

Electrochemistry: Chemical Change and Electrical Work

The Elements in Nature and Industry

Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

Filters

Exam 1: Keys to the Study of Chemistry: Definitions, Units, and Problem Solving

Select the best statement about chemistry before 1800.

The joule is the SI unit of energy and is equal to 1 kg m2 s−2. The erg is another energy unit, equal to 1 g cm2 s−2. Use unit conversion methods to work out how many ergs are in 1 joule.

The mass of a sample is 550 milligrams. Which of the following expresses that mass in kilograms?

The ripening of fruit, once picked, is an example of physical change.

During the swing of a frictionless pendulum, what energy form(s) remain constant?

A detailed explanation of natural phenomena that is generally accepted and has been extensively tested is called a

If the density of a certain spherical atomic nucleus is 1.0 × 1014 g cm−3 and its mass is 2.0 × 10−23 g, what is its radius in cm?

The density of mercury, the only metal to exist as a liquid at room temperature, is 13.6 g/cm3. What is that density in pounds per cubic inch?

Which measurement is expressed to 4 significant figures?

The symbol for the SI base unit of mass is

The Components of Matter

Stoichiometry of Formulas and Equations

Three Major Classes of Chemical Reactions

Gases and the Kinetic-Molecular Theory

Thermochemistry: Energy Flow and Chemical Change

Quantum Theory and Atomic Structure

Electron Configuration and Chemical Periodicity

Models of Chemical Bonding

The Shapes of Molecules

Theories of Covalent Bonding

Intermolecular Forces: Liquids, Solids, and Phase Changes

The Properties of Mixtures: Solutions and Colloids

Periodic Patterns in the Main-Group Elements

Organic Compounds and the Atomic Properties of Carbon

Kinetics: Rates and Mechanisms of Chemical Reactions

Equilibrium: the Extent of Chemical Reactions

Acid-Base Equilibria

Ionic Equilibria in Aqueous Systems

Thermodynamics: Entropy, Free Energy, and Reaction Direction

Electrochemistry: Chemical Change and Electrical Work

The Elements in Nature and Industry

Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

Filters

The joule is the SI unit of energy and is equal to 1 kg m² s⁻². The erg is another energy unit, equal to 1 g cm² s⁻². Use unit conversion methods to work out how many ergs are in 1 joule.

If the density of a certain spherical atomic nucleus is 1.0 × 10¹⁴ g cm⁻³ and its mass is 2.0 × 10⁻²³ g, what is its radius in cm?

The density of mercury, the only metal to exist as a liquid at room temperature, is 13.6 g/cm³. What is that density in pounds per cubic inch?