Question 1

What is the density of copper if 11.8 cm3 of copper has a mass of 105.2 g?

Accepted Answer

Question 2

Choose the response that includes all the items listed below that are pure substances. i.orange juice ii.steam iii.ocean water iv.oxygen v.vegetable soup

Accepted Answer

A) i, iii, v 
B) ii, iv 
C) i, iii, iv 
D) iv only 
E) all of them are pure 
A) i, iii, v 
B) ii, iv 
C) i, iii, iv 
D) iv only 
E) all of them are pure

Question 3

Americans combined drive about 4.0 *109 miles per day and their vehicles get an average of 20 miles per gallon of fuel used. For each 1 kg of gasoline that is burned, about 3.0 kg of carbon dioxide are produced. How many kilograms of CO2 are emitted into the atmosphere each day by cars in the U.S.? One gallon of gas weighs about 3.5 kg.

Accepted Answer

A) 2.1 * 109 kg 
B) 8.4 * 1011 kg 
C) 1.7 * 108 kg 
D) 93 kg 
E) none of these 
A) 2.1 * 109 kg 
B) 8.4 * 1011 kg 
C) 1.7 * 108 kg 
D) 93 kg 
E) none of these

Question 4

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 5

What are the three states of matter?

Accepted Answer

Solid, liq

Question 6

What will be the cost of gasoline for a 3,700-mile trip in a car that gets 23 miles per gallon, if the average price of gas is $2.90 per gallon?

Accepted Answer

The answer of What will be the cost of gasoline...

Question 7

Classify the following as an element, a compound, or a mixture: Table salt (non-iodized).

Accepted Answer

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

Question 8

A particular flask has a mass of 17.4916 g when empty. When filled with ordinary water at 20.0°C (density = 0.9982 g/mL), the mass of the flask is now 43.9616 g. The density of so-called "heavy water" at 20.0°C is 1.1053 g/mL. What will the mass of the flask be when filled with heavy water at 20.0°C?

Accepted Answer

A) 29.2573 g 
B) 46.8016 g 
C) 46.7489 g 
D) 29.3100 g 
E) 43.9140 g 
A) 29.2573 g 
B) 46.8016 g 
C) 46.7489 g 
D) 29.3100 g 
E) 43.9140 g

Question 9

Convert 500.milliliters to quarts. (1L = 1.06 qt)

Accepted Answer

A) 1.88 qt 
B) 0.472 qt 
C) 0.528 qt 
D) 4.72 * 105 qt 
E) 5.28 * 105 qt 
A) 1.88 qt 
B) 0.472 qt 
C) 0.528 qt 
D) 4.72 * 105 qt 
E) 5.28 * 105 qt

Question 10

Give three examples of pure substances.

Accepted Answer

(Answers will vary.)

Question 11

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

Question 12

An object will float at the surface of a liquid if the mass of the object is less than the mass of the liquid that it displaces. A spherical vessel (diameter = 2.00 cm)when empty has a mass of 2.00 g. What is the greatest volume of water that can be placed in the vessel and still have the vessel float at the surface of water? (Given: density of water = 1.00 g/cm3)

Accepted Answer

A) 2.00 mL 
B) 31.5 mL 
C) 2.19 mL 
D) 4.19 mL 
E) the vessel will not float even when empty 
A) 2.00 mL 
B) 31.5 mL 
C) 2.19 mL 
D) 4.19 mL 
E) the vessel will not float even when empty

Question 13

Classify the following as a mixture, a compound, or an element: Sugar to put in a cup of coffee.

Accepted Answer

The answer of Classify the following as a mixture, a...

Question 14

Identify the following as a physical or chemical change: Fermenting grapes.

Accepted Answer

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

Question 15

A microliter corresponds to:

Accepted Answer

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

Question 16

What is the volume, in cubic inches, of a brick that is 4.0 in * 2.7 in * 8.0 in?

Accepted Answer

A) 15 in3 
B) 51 in3 
C) 78 in3 
D) 87 in3 
E) 150 in3 
A) 15 in3 
B) 51 in3 
C) 78 in3 
D) 87 in3 
E) 150 in3

Question 17

The diameter of Earth is 12.7 Mm. Express this diameter in centimeters.

Accepted Answer

A) 1.27 * 105 cm 
B) 1.27 * 106 cm 
C) 1.27 * 107 cm 
D) 1.27 * 108 cm 
E) 1.27 * 109 cm 
A) 1.27 * 105 cm 
B) 1.27 * 106 cm 
C) 1.27 * 107 cm 
D) 1.27 * 108 cm 
E) 1.27 * 109 cm

Question 18

A soft drink costs 75 cents for a 12-oz can.A two-liter bottle costs $1.25.In which form is the soft drink more expensive? How much more expensive? (1.0 L = 1.057 qt, 1 qt = 32 oz)

Accepted Answer

The two-liter bottle

Question 19

Classify the following as a physical or chemical change: Antifreeze boils out of a radiator.

Accepted Answer

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

Question 20

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

Exam 1: Chemistry: The Study of Change

What is the density of copper if 11.8 cm3 of copper has a mass of 105.2 g?

Choose the response that includes all the items listed below that are pure substances. i.orange juice ii.steam iii.ocean water iv.oxygen v.vegetable soup

Complete the following sentence. A hypothesis is

What are the three states of matter?

What will be the cost of gasoline for a 3,700-mile trip in a car that gets 23 miles per gallon, if the average price of gas is $2.90 per gallon?

Classify the following as an element, a compound, or a mixture: Table salt (non-iodized).

Convert 500.milliliters to quarts. (1L = 1.06 qt)

Give three examples of pure substances.

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)

Classify the following as a mixture, a compound, or an element: Sugar to put in a cup of coffee.

Identify the following as a physical or chemical change: Fermenting grapes.

A microliter corresponds to:

What is the volume, in cubic inches, of a brick that is 4.0 in * 2.7 in * 8.0 in?

The diameter of Earth is 12.7 Mm. Express this diameter in centimeters.

A soft drink costs 75 cents for a 12-oz can.A two-liter bottle costs $1.25.In which form is the soft drink more expensive? How much more expensive? (1.0 L = 1.057 qt, 1 qt = 32 oz)

Classify the following as a physical or chemical change: Antifreeze boils out of a radiator.

Which of the following represents the largest mass?

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

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What is the density of copper if 11.8 cm³ of copper has a mass of 105.2 g?