Question 1

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 2

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 3

As part of an experiment to determine the density of a new plastic developed in her laboratory, Sara Ann Dippity measures the volume of a solid sample. Her four trials yield volumes of 12.37 cm3, 12.41 cm3, 12.39 cm3, and 12.38 cm3. Measurements of other scientists in the lab give an average volume of 12.49 cm3. Which of the following statements represents the best analysis of the data?

Accepted Answer

A)  Sara's results have low precision and high accuracy. 
B)  Sara's results have high precision and high accuracy. 
C)  Sara's results have greater precision than accuracy. 
D)  Sara's results have greater accuracy than precision. 
E)  Sara has been using a faulty instrument to measure the volume. 
A)  Sara's results have low precision and high accuracy. 
B)  Sara's results have high precision and high accuracy. 
C)  Sara's results have greater precision than accuracy. 
D)  Sara's results have greater accuracy than precision. 
E)  Sara has been using a faulty instrument to measure the volume.

Question 4

The potential energy of a car moving on a level road does not depend on its speed.

Accepted Answer

A) True 
 B)False

Question 5

Acetone, which is used as a solvent and as a reactant in the manufacture of Plexiglas, boils at 56.1°C. What is the boiling point in degrees Fahrenheit?

Accepted Answer

A)  159°F 
B)  133°F 
C)  101°F 
D)  69.0°F 
E)  43.4°F 
A)  159°F 
B)  133°F 
C)  101°F 
D)  69.0°F 
E)  43.4°F

Question 6

Express 96,342 m using 2 significant figures.

Accepted Answer

A)  9.60 × 104 m 
B)  9.6 × 104 m 
C)  9.60 × 10-4 m 
D)  9.6 × 10-4 m 
E)  96000. m 
A)  9.60 × 104 m 
B)  9.6 × 104 m 
C)  9.60 × 10-4 m 
D)  9.6 × 10-4 m 
E)  96000. m

Question 7

Which of the following correctly expresses 0.000007913 g in scientific notation?

Accepted Answer

A)  7.913 × 106 g 
B)  7.913 × 105 g 
C)  7.913 × 10-5 g 
D)  7.913 × 10-6 g 
E)  7.913 × 10-9 g 
A)  7.913 × 106 g 
B)  7.913 × 105 g 
C)  7.913 × 10-5 g 
D)  7.913 × 10-6 g 
E)  7.913 × 10-9 g

Question 8

Which of the following is an extensive property of oxygen?

Accepted Answer

A)  boiling point 
B)  temperature 
C)  average kinetic energy of molecules 
D)  density 
E)  mass 
A)  boiling point 
B)  temperature 
C)  average kinetic energy of molecules 
D)  density 
E)  mass

Question 9

Which of the following is a physical change?

Accepted Answer

A)  milk turning sour 
B)  battery cables corroding 
C)  sugar turning brown when heated 
D)  liquid water being cooled and forming ice 
E)  an egg being hard-boiled 
A)  milk turning sour 
B)  battery cables corroding 
C)  sugar turning brown when heated 
D)  liquid water being cooled and forming ice 
E)  an egg being hard-boiled

Question 10

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

Accepted Answer

A)  5.5 × 108 kg 
B)  5.5 × 105 kg 
C)  5.5 × 10-4 kg 
D)  5.5 × 10-6 kg 
E)  5.5 × 10-1 kg 
A)  5.5 × 108 kg 
B)  5.5 × 105 kg 
C)  5.5 × 10-4 kg 
D)  5.5 × 10-6 kg 
E)  5.5 × 10-1 kg

Question 11

In each of the sets below, choose the one quantity or number which is exact.
A) i. the human population
ii. the distance in light years from the sun to Alpha Centauri, a nearby star
iii. the winning time for the 100 m dash in the Olympic Games
B) i. the weight of a particular one cent coin in g
ii. the boiling point of lead, in °C
iii. the number of cm in 1 yd 
C) i. the measured value of the speed of light (2.998 × 108 m/s)
ii. π (3.141)
iii. the volume of milk in a 1-gallon jug

Accepted Answer

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 potential energy of a car moving on a level road does not depend on its speed.

Acetone, which is used as a solvent and as a reactant in the manufacture of Plexiglas, boils at 56.1°C. What is the boiling point in degrees Fahrenheit?

Express 96,342 m using 2 significant figures.

Which of the following correctly expresses 0.000007913 g in scientific notation?

Which of the following is an extensive property of oxygen?

Which of the following is a physical change?

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

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 Studying Chemistry Definitions, Units, and Problem Solving

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 potential energy of a car moving on a level road does not depend on its speed.

Acetone, which is used as a solvent and as a reactant in the manufacture of Plexiglas, boils at 56.1°C. What is the boiling point in degrees Fahrenheit?

Express 96,342 m using 2 significant figures.

Which of the following correctly expresses 0.000007913 g in scientific notation?

Which of the following is an extensive property of oxygen?

Which of the following is a physical change?

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

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

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?