Question 1

Identify the following as a physical or chemical change: Fashioning a table leg from a piece of wood.

Accepted Answer

Physical

Question 2

How many cubic inches are in 1.00 liter?

Accepted Answer

A) 61.0 in3 
B) 155 in3 
C) 394 in3 
D) 1.64 * 104 in3 
E) none of them 
A) 61.0 in3 
B) 155 in3 
C) 394 in3 
D) 1.64 * 104 in3 
E) none of them A

Question 3

How many significant figures does the number 30.340 contain?

Accepted Answer

5

Question 4

Identify the following as a physical or chemical change: Rusting of a piece of iron.

Accepted Answer

The answer of Identify the following as a physical or...

Question 5

Define matter.

Accepted Answer

Matter is anything t

Question 6

Liquid nitrogen boils at -195.8$\circ$C. Express the boiling point of liquid nitrogen in kelvin.

Accepted Answer

A) -469.0 K 
B) -77.4 K 
C) all temperatures are 0 K on the Kelvin scale 
D) 77.4 K 
E) 469.0 K 
A) -469.0 K 
B) -77.4 K 
C) all temperatures are 0 K on the Kelvin scale 
D) 77.4 K 
E) 469.0 K

Question 7

Give an example of an extensive property.

Accepted Answer

(Answers w

Question 8

Complete the following sentence. A hypothesis is

Accepted Answer

A) a tentative explanation for a set of observations that can be tested by further experimentation. 
B) a statement describing a relationship between phenomena that is always the same under the same conditions. 
C) a unifying principle that explains a body of facts and relations. 
D) a model used to visualize the invisible. 
A) a tentative explanation for a set of observations that can be tested by further experimentation. 
B) a statement describing a relationship between phenomena that is always the same under the same conditions. 
C) a unifying principle that explains a body of facts and relations. 
D) a model used to visualize the invisible.

Question 9

You just measured a block of wood and obtained the following information:
mass = 55.120 g
length = 8.5 cm
height = 4.3 cm
width = 3.3 cm
Determine the volume and density of the wood block.

Accepted Answer

Volume of the wood b

Question 10

In 1828, the diameter of the U.S. dime was changed to approximately 18 mm. What is this diameter when expressed in nanometers?

Accepted Answer

A) 1.8 * 109  nm 
B) 1.8 * 107 nm 
C) 1.8 * 101 nm 
D) 1.8 * 10- 5 nm 
E) 1.8 * 10- 10 nm 
A) 1.8 * 109  nm 
B) 1.8 * 107 nm 
C) 1.8 * 101 nm 
D) 1.8 * 10- 5 nm 
E) 1.8 * 10- 10 nm

Question 11

A tentative explanation for a set of observations that can be tested by further experimentation is referred to as

Accepted Answer

A) a hypothesis. 
B) a law. 
C) a theory. 
D) none of the above. 
A) a hypothesis. 
B) a law. 
C) a theory. 
D) none of the above.

Question 12

The number 9.64870 * 105 contains how many significant figures?

Accepted Answer

Question 13

The average distance from Earth to the sun is 9.3 * 107 miles. How many kilometers is this?

Accepted Answer

A) 1.5 * 108 km 
B) 1.5 * 105 km 
C) 5.6 * 107 km 
D) 1.7 * 10 - 8 km 
E) 1.5 * 1011 km 
A) 1.5 * 108 km 
B) 1.5 * 105 km 
C) 5.6 * 107 km 
D) 1.7 * 10 - 8 km 
E) 1.5 * 1011 km

Question 14

Classify the following as a pure substance or a mixture: Seven-Up®.

Accepted Answer

The answer of Classify the following as a pure substance...

Question 15

A piece of a metal alloy with a mass of 114 g was placed into a graduated cylinder that contained 25.0 mL of water, raising the water level to 42.5 mL. What is the density of the metal?

Accepted Answer

A) 0.154 g/cm3 
B) 0.592 g/cm3 
C) 2.68 g/cm3 
D) 6.51 g/cm3 
E) 7.25 g/cm3 
A) 0.154 g/cm3 
B) 0.592 g/cm3 
C) 2.68 g/cm3 
D) 6.51 g/cm3 
E) 7.25 g/cm3

Question 16

Give examples of three physical properties.

Accepted Answer

(Answers will vary.)

Question 17

Classify the following as an element, a compound, or a mixture: Air.

Accepted Answer

The answer of Classify the following as an element, a...

Question 18

The element gallium melts at 29.8$\circ$C. What temperature is this in $\circ$F?

Accepted Answer

A) -54.1$\circ$F 
B) -7.8$\circ$F 
C) +13.5$\circ$F 
D) +51.3$\circ$F 
E) +85.6$\circ$F 
A) -54.1$\circ$F 
B) -7.8$\circ$F 
C) +13.5$\circ$F 
D) +51.3$\circ$F 
E) +85.6$\circ$F

Question 19

The SI prefixes nano and deci represent, respectively:

Accepted Answer

A) 10- 9 and 10- 6. 
B) 106 and 10- 3. 
C) 103 and 10- 3. 
D) 109 and 10- 6. 
E) 10- 9 and 10- 1. 
A) 10- 9 and 10- 6. 
B) 106 and 10- 3. 
C) 103 and 10- 3. 
D) 109 and 10- 6. 
E) 10- 9 and 10- 1.

Question 20

If a car has an EPA mileage rating of 30 miles per gallon, what is this rating in kilometers per liter? (1 L = 1.06 qt)

Accepted Answer

A) 200 km/L 
B) 180 km/L 
C) 70 km/L 
D) 13 km/L 
E) 11 km/L 
A) 200 km/L 
B) 180 km/L 
C) 70 km/L 
D) 13 km/L 
E) 11 km/L

Exam 1: Introduction

Identify the following as a physical or chemical change: Fashioning a table leg from a piece of wood.

How many cubic inches are in 1.00 liter?

How many significant figures does the number 30.340 contain?

Identify the following as a physical or chemical change: Rusting of a piece of iron.

Define matter.

Liquid nitrogen boils at -195.8 ∘\circ∘ C. Express the boiling point of liquid nitrogen in kelvin.

Give an example of an extensive property.

Complete the following sentence. A hypothesis is

You just measured a block of wood and obtained the following information: mass = 55.120 g length = 8.5 cm height = 4.3 cm width = 3.3 cm Determine the volume and density of the wood block.

In 1828, the diameter of the U.S. dime was changed to approximately 18 mm. What is this diameter when expressed in nanometers?

A tentative explanation for a set of observations that can be tested by further experimentation is referred to as

The number 9.64870 * 105 contains how many significant figures?

The average distance from Earth to the sun is 9.3 * 107 miles. How many kilometers is this?

Classify the following as a pure substance or a mixture: Seven-Up®.

A piece of a metal alloy with a mass of 114 g was placed into a graduated cylinder that contained 25.0 mL of water, raising the water level to 42.5 mL. What is the density of the metal?

Give examples of three physical properties.

Classify the following as an element, a compound, or a mixture: Air.

The element gallium melts at 29.8 ∘\circ∘ C. What temperature is this in ∘\circ∘ F?

The SI prefixes nano and deci represent, respectively:

If a car has an EPA mileage rating of 30 miles per gallon, what is this rating in kilometers per liter? (1 L = 1.06 qt)

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

Liquid nitrogen boils at -195.8^$\circ$C. Express the boiling point of liquid nitrogen in kelvin.

The number 9.64870 * 10⁵ contains how many significant figures?

The average distance from Earth to the sun is 9.3 * 10⁷ miles. How many kilometers is this?

The element gallium melts at 29.8^$\circ$C. What temperature is this in ^$\circ$F?