Question 1

Which of the following 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$\circ$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$\circ$C

Question 2

Suppose a house has a floor area of 2,250 square feet. What is this area in units of square centimeters?

Accepted Answer

A) 2.42 cm2 
B) 2.09 * 106 cm2 
C) 5.02 * 104 cm2 
D) 6.86 * 104 cm2 
E) 101 cm2 
A) 2.42 cm2 
B) 2.09 * 106 cm2 
C) 5.02 * 104 cm2 
D) 6.86 * 104 cm2 
E) 101 cm2

Question 3

Radio waves travel at the speed of light, which is 3.00 * 108 m/s. How many kilometers will radio messages travel in exactly one year?

Accepted Answer

A) 9.46 * 1015 km 
B) 7.30 * 108 km 
C) 7.10 * 1010 km 
D) 9.46 * 1012 km 
E) 3.33 * 10 - 3 km 
A) 9.46 * 1015 km 
B) 7.30 * 108 km 
C) 7.10 * 1010 km 
D) 9.46 * 1012 km 
E) 3.33 * 10 - 3 km

Question 4

Bromine is a red liquid at 25$\circ$C. Its density is 3.12 g/cm3. What is the volume of 28.1 g of liquid bromine?

Accepted Answer

A) 87.7 cm3 
B) 0.111 cm3 
C) 9.01 cm3 
D) 28.1 cm3 
E) None of the above. 
A) 87.7 cm3 
B) 0.111 cm3 
C) 9.01 cm3 
D) 28.1 cm3 
E) None of the above.

Question 5

How many significant figures does the result of the following sum contain? 8.520 + 2.7

Accepted Answer

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

Question 6

Give an example of an intensive property.

Accepted Answer

(Answers will vary.)

Question 7

Radio waves travel at the speed of light, which is 3.00 * 108 m/s. How many minutes does it take for a radio message to reach Earth from Saturn if Saturn is 7.9 * 108 km from Earth?

Accepted Answer

A) 4.4 * 10 -2 min 
B) 1.6 * 105 min 
C) 4.0 * 1015 min 
D) 44 min 
E) 2.6 min 
A) 4.4 * 10 -2 min 
B) 1.6 * 105 min 
C) 4.0 * 1015 min 
D) 44 min 
E) 2.6 min

Question 8

Which of the following represents the largest mass?

Accepted Answer

A) 2.0 * 102 mg 
B) 0.0010 kg 
C) 1.0 * 105 ng 
D) 2.0 * 102 cg 
E) 10.0 dg 
A) 2.0 * 102 mg 
B) 0.0010 kg 
C) 1.0 * 105 ng 
D) 2.0 * 102 cg 
E) 10.0 dg

Question 9

Give three examples of pure substances.

Accepted Answer

(Answers will vary.)

Question 10

Classify the following as either a physical or a chemical property: The vitamin content of foods in contact with air falls.

Accepted Answer

The answer of Classify the following as either a physical...

Question 11

How many significant figures does the difference 218.7201 - 218.63 contain?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 5 
E) 7 
A) 1 
B) 2 
C) 3 
D) 5 
E) 7

Question 12

Express the number 0.000053 in scientific notation.

Accepted Answer

A) 5.3 *10-2 
B) 5.3 * 10-3 
C) 5.3 * 10-4 
D) 5.3 * 10-5 
E) 5.3 * 10-6 
A) 5.3 *10-2 
B) 5.3 * 10-3 
C) 5.3 * 10-4 
D) 5.3 * 10-5 
E) 5.3 * 10-6

Question 13

Name two types of mixtures.

Accepted Answer

Homogeneou

Question 14

The radius of the Earth is approximately 6370 km. If one could dig down straight towards the center of the Earth, one would find that the innermost 3480 km (the core)has an average density of about 11. g/cm3. Above that are the mantle and crust. If the average density of the Earth is 5.5 g/cm3, what is the average density of the Earth's mantle and crust? (Recall that the volume of a sphere is given by V = (4/3)$\pi$r3.)

Accepted Answer

A) 57. g/cm3 
B) 4.5 g/cm3 
C) 8.7 g/cm3 
D) 5.3 g/cm3 
E) not enough data is provided 
A) 57. g/cm3 
B) 4.5 g/cm3 
C) 8.7 g/cm3 
D) 5.3 g/cm3 
E) not enough data is provided

Question 15

A block of iron has a mass of 483 g. What is the mass of a block of graphite that has the same volume as the block of iron? The following densities at 25$\circ$C are provided: magnesium, 1.7 g/cm3 ; graphite, 1.8 g/cm3 ; iron, 7.9 g/cm3.

Accepted Answer

A) 110 g 
B) 2120 g 
C) 6870 g 
D) 34 g 
E) none of them are within 10 g of the right answer. 
A) 110 g 
B) 2120 g 
C) 6870 g 
D) 34 g 
E) none of them are within 10 g of the right answer.

Question 16

The weight of a body varies according to the force of gravity exerted on the body.

Accepted Answer

A) True 
 B)False

Question 17

What is the mass of 1.00 dm3 of mercury? The density of mercury is 13.6 g/cm3.

Accepted Answer

Question 18

A nanometer corresponds to:

Accepted Answer

A) 10- 2 meters. 
B) 10- 3 meters. 
C) 10- 6 meters. 
D) 10- 9 meters. 
E) 10- 12 meters. 
A) 10- 2 meters. 
B) 10- 3 meters. 
C) 10- 6 meters. 
D) 10- 9 meters. 
E) 10- 12 meters.

Question 19

The density of mercury is 13.6 g/cm3. What is the mass in pounds of 1.0 gallons of mercury? (1 lb = 453.6 g; 1 gal = 3.785 L)

Accepted Answer

A) 0.11 lb 
B) 30. lb 
C) 51 lb 
D) 83 lb 
E) 110 lb 
A) 0.11 lb 
B) 30. lb 
C) 51 lb 
D) 83 lb 
E) 110 lb

Question 20

What are the three states of matter?

Accepted Answer

Solid, liq

Exam 1: Introduction

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

Suppose a house has a floor area of 2,250 square feet. What is this area in units of square centimeters?

Radio waves travel at the speed of light, which is 3.00 * 108 m/s. How many kilometers will radio messages travel in exactly one year?

Bromine is a red liquid at 25 ∘\circ∘ C. Its density is 3.12 g/cm3. What is the volume of 28.1 g of liquid bromine?

How many significant figures does the result of the following sum contain? 8.520 + 2.7

Give an example of an intensive property.

Radio waves travel at the speed of light, which is 3.00 * 108 m/s. How many minutes does it take for a radio message to reach Earth from Saturn if Saturn is 7.9 * 108 km from Earth?

Which of the following represents the largest mass?

Give three examples of pure substances.

Classify the following as either a physical or a chemical property: The vitamin content of foods in contact with air falls.

How many significant figures does the difference 218.7201 - 218.63 contain?

Express the number 0.000053 in scientific notation.

Name two types of mixtures.

A block of iron has a mass of 483 g. What is the mass of a block of graphite that has the same volume as the block of iron? The following densities at 25 ∘\circ∘ C are provided: magnesium, 1.7 g/cm3 ; graphite, 1.8 g/cm3 ; iron, 7.9 g/cm3.

The weight of a body varies according to the force of gravity exerted on the body.

What is the mass of 1.00 dm3 of mercury? The density of mercury is 13.6 g/cm3.

A nanometer corresponds to:

The density of mercury is 13.6 g/cm3. What is the mass in pounds of 1.0 gallons of mercury? (1 lb = 453.6 g; 1 gal = 3.785 L)

What are the three states of matter?

Atoms, Molecules, and Ions

Stoichiometry

Reactions in Aqueous Solution

Gases

Energy Relationships in Chemical Reactions

The Electronic Structure of Atoms

The Periodic Table

Chemical Bonding I: the Covalent Bond

Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

Introduction to Organic Chemistry

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Thermodynamics

Redox Reactions and Electrochemistry

The Chemistry of Coordination Compounds

Nuclear Chemistry

Organic Polymerssynthetic and Natural

Filters

Radio waves travel at the speed of light, which is 3.00 * 10⁸ m/s. How many kilometers will radio messages travel in exactly one year?

Bromine is a red liquid at 25^$\circ$C. Its density is 3.12 g/cm³. What is the volume of 28.1 g of liquid bromine?

Radio waves travel at the speed of light, which is 3.00 * 10⁸ m/s. How many minutes does it take for a radio message to reach Earth from Saturn if Saturn is 7.9 * 10⁸ km from Earth?

A block of iron has a mass of 483 g. What is the mass of a block of graphite that has the same volume as the block of iron? The following densities at 25^$\circ$C are provided: magnesium, 1.7 g/cm³; graphite, 1.8 g/cm³; iron, 7.9 g/cm³.

What is the mass of 1.00 dm³ of mercury? The density of mercury is 13.6 g/cm³.

The density of mercury is 13.6 g/cm³. What is the mass in pounds of 1.0 gallons of mercury? (1 lb = 453.6 g; 1 gal = 3.785 L)