Question 1

Give examples of three physical properties.

Accepted Answer

(Answers will vary.)

Question 2

An American engineer who had been transferred to Europe was asked to build bridge pilings exactly as he had in the United States.Each piling required 20.0 cubic yards of concrete in the United States.How many cubic meters of concrete are required for each piling? Given: 1 yd = 0.914 m.

Accepted Answer

The answer of An American engineer who had been transferred...

Question 3

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

Accepted Answer

Question 4

The city of Los Angeles is now approximately 2400 miles south of Alaska. It is moving slowly northward as the San Andreas fault slides along. If Los Angeles is to arrive near Anchorage, Alaska, in 76 million years, at what average rate will it have to move in mm per month?

Accepted Answer

A) 2.0 * 10-10 mm/mo. 
B) 6.6 * 10-6 mm/mo. 
C) 4.2 mm/mo. 
D) 9.5 mm/mo. 
E) 51 mm/mo. 
A) 2.0 * 10-10 mm/mo. 
B) 6.6 * 10-6 mm/mo. 
C) 4.2 mm/mo. 
D) 9.5 mm/mo. 
E) 51 mm/mo.

Question 5

Express 7,500 nm as picometers.

Accepted Answer

A) 7.50 pm 
B) 75.0 pm 
C) 750 pm 
D) 7.5 * 106 pm 
E) 7.5 * 1012 pm 
A) 7.50 pm 
B) 75.0 pm 
C) 750 pm 
D) 7.5 * 106 pm 
E) 7.5 * 1012 pm

Question 6

The recommended daily allowance (RDA)of calcium is 1.2 g. Calcium carbonate contains 12.0% calcium by mass. How many grams of calcium carbonate are needed to provide the RDA of calcium?

Accepted Answer

A) 0.10 g 
B) 0.14 g 
C) 1.2 g 
D) 10 g 
E) 14 g 
A) 0.10 g 
B) 0.14 g 
C) 1.2 g 
D) 10 g 
E) 14 g

Question 7

Define mixture.

Accepted Answer

A mixture is a combination of

Question 8

Do the indicated arithmetic and give the answer to the correct number of significant figures. (1.5 * 10-4 * 61.3)+ 2.01 =

Accepted Answer

A) 2.0192 
B) 2.0 
C) 2.019 
D) 2.02 
E) 2.019195 
A) 2.0192 
B) 2.0 
C) 2.019 
D) 2.02 
E) 2.019195

Question 9

Classify the following as a pure substance or a mixture: Bread.

Accepted Answer

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

Question 10

An object sinks when placed in water if the mass of the object is greater than the mass of the water that the object displaces. Which of the following objects will sink when dropped into a bucket of water? (Given: density of water = 1.00 g/cm3)

Accepted Answer

A) a cube of aluminum (density = 2.702 g/cm3) 
B) a diamond (density = 3.51 g/cm3) 
C) a chunk of dry ice (density = 1.56 g/cm3) 
D) a chunk of sodium (density = 0.91 g/cm3) 
E) a sphere of magnesium (density = 1.74 g/cm3) 
A) a cube of aluminum (density = 2.702 g/cm3) 
B) a diamond (density = 3.51 g/cm3) 
C) a chunk of dry ice (density = 1.56 g/cm3) 
D) a chunk of sodium (density = 0.91 g/cm3) 
E) a sphere of magnesium (density = 1.74 g/cm3)

Question 11

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 12

Classify the following as either a physical or a chemical property: Ice melts at 0$\circ$C.

Accepted Answer

Question 13

Define matter.

Accepted Answer

Matter is anything t

Question 14

How many square kilometers are equivalent to 28.5 cm2?

Accepted Answer

A) 2.85 * 10-9 km2 
B) 2.85 * 10-6 km2 
C) 285 km2 
D) 2.85 * 10-4 km2 
E) none of these 
A) 2.85 * 10-9 km2 
B) 2.85 * 10-6 km2 
C) 285 km2 
D) 2.85 * 10-4 km2 
E) none of these

Question 15

An automobile engine has a piston displacement of 1,600 cm3. Express this volume in cubic inches.(1 in = 2.54 cm)

Accepted Answer

Question 16

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 17

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

Accepted Answer

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

Question 18

The conversion of water into steam is an example of a chemical change.

Accepted Answer

A) True 
 B)False

Question 19

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

Accepted Answer

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

Question 20

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

Exam 1: Chemistry: The Study of Change

Give examples of three physical properties.

An American engineer who had been transferred to Europe was asked to build bridge pilings exactly as he had in the United States.Each piling required 20.0 cubic yards of concrete in the United States.How many cubic meters of concrete are required for each piling? Given: 1 yd = 0.914 m.

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

The city of Los Angeles is now approximately 2400 miles south of Alaska. It is moving slowly northward as the San Andreas fault slides along. If Los Angeles is to arrive near Anchorage, Alaska, in 76 million years, at what average rate will it have to move in mm per month?

Express 7,500 nm as picometers.

The recommended daily allowance (RDA)of calcium is 1.2 g. Calcium carbonate contains 12.0% calcium by mass. How many grams of calcium carbonate are needed to provide the RDA of calcium?

Define mixture.

Do the indicated arithmetic and give the answer to the correct number of significant figures. (1.5 * 10-4 * 61.3)+ 2.01 =

Classify the following as a pure substance or a mixture: Bread.

An object sinks when placed in water if the mass of the object is greater than the mass of the water that the object displaces. Which of the following objects will sink when dropped into a bucket of water? (Given: density of water = 1.00 g/cm3)

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?

Classify the following as either a physical or a chemical property: Ice melts at 0 ∘\circ∘ C.

Define matter.

How many square kilometers are equivalent to 28.5 cm2?

An automobile engine has a piston displacement of 1,600 cm3. Express this volume in cubic inches.(1 in = 2.54 cm)

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?

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

The conversion of water into steam is an example of a chemical change.

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

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

Atoms, Molecules, and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solution

Gases

Thermo-Chemistry

Quantum Theory and the Electronic Structure of Atoms

Periodic Relationships Among the Elements

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Chemistry in the Atmosphere

Entropy, Free Energy, and Equilibrium

Electrochemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metal Chemistry and Coordination Compounds

Nuclear Chemistry

Organic Chemistry

Synthetic and Natural Organic Polymers

Filters

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

Do the indicated arithmetic and give the answer to the correct number of significant figures. (1.5 * 10^-4 * 61.3)+ 2.01 =

An object sinks when placed in water if the mass of the object is greater than the mass of the water that the object displaces. Which of the following objects will sink when dropped into a bucket of water? (Given: density of water = 1.00 g/cm³)

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?

Classify the following as either a physical or a chemical property: Ice melts at 0^$\circ$C.

How many square kilometers are equivalent to 28.5 cm²?

An automobile engine has a piston displacement of 1,600 cm³. Express this volume in cubic inches.(1 in = 2.54 cm)