Question 1

Which of the following cannot be separated into simpler substances by chemical means?

Accepted Answer

A) Element 
B) Emulsion 
C) Compound 
D) Homogeneous mixture 
E) Heterogeneous mixture 
A) Element 
B) Emulsion 
C) Compound 
D) Homogeneous mixture 
E) Heterogeneous mixture

Question 2

If a liquid contains 60% sugar and 40% water throughout its composition then what is it called?

Accepted Answer

A) Solute 
B) Compound 
C) Homogeneous mixture 
D) Heterogeneous mixture 
E) Solvent 
A) Solute 
B) Compound 
C) Homogeneous mixture 
D) Heterogeneous mixture 
E) Solvent

Question 3

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 4

A large pizza has a diameter of 15 inches.Express this diameter in centimeters.(1 in = 2.54 cm)

Accepted Answer

A) 38 cm 
B) 24 cm 
C) 18 cm 
D) 9.3 cm 
E) 5.9 cm 
A) 38 cm 
B) 24 cm 
C) 18 cm 
D) 9.3 cm 
E) 5.9 cm

Question 5

Given that 1 inch = 2.54 cm,1.00 cm3 is equal to

Accepted Answer

A) 16.4 in3 
B) 6.45 in3 
C) 0.394 in3 
D) 0.155 in3 
E) 0.0610 in3 
A) 16.4 in3 
B) 6.45 in3 
C) 0.394 in3 
D) 0.155 in3 
E) 0.0610 in3

Question 6

Burning wood in a fireplace is a __________ change.

Accepted Answer

The answer of Burning wood in a fireplace is a...

Question 7

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 8

If you have a graduated cylinder containing 15.5 mL and this volume changes to 95.2 mL after a metal with a mass of 7.95 g is dropped into the graduated cylinder,then what is the density of this metal?

Accepted Answer

A) 0.0835 g/mL 
B) 0.513 g/mL 
C) 0.0718 g/mL 
D) 10.0 g/mL 
E) 9.97 × 10-2 g/mL 
A) 0.0835 g/mL 
B) 0.513 g/mL 
C) 0.0718 g/mL 
D) 10.0 g/mL 
E) 9.97 × 10-2 g/mL

Question 9

What is a substance composed of atoms of two or more elements chemically united in fixed proportions?

Accepted Answer

The answer of What is a substance composed of atoms...

Question 10

What is something that has a definite composition?

Accepted Answer

The answer of What is something that has a definite...

Question 11

How many milliliters is 0.0055 L?

Accepted Answer

A) 0.55 mL 
B) 5.5 mL 
C) 0.5 mL 
D) 0.0000055 mL 
E) 182 mL 
A) 0.55 mL 
B) 5.5 mL 
C) 0.5 mL 
D) 0.0000055 mL 
E) 182 mL

Question 12

Matter is anything that has mass and occupies space.

Accepted Answer

A) True 
 B)False

Question 13

Some molecules move with speeds approaching the "escape velocity" from Earth,which is 7.0 miles per second.What is this speed in cm/h? (1 mi = 1609 m)

Accepted Answer

A) 313 cm/h 
B) 4.1 × 105 cm/h 
C) 4.1 × 109 cm/h 
D) 1.1 × 106 cm/h 
E) 1.6 × 109 cm/h 
A) 313 cm/h 
B) 4.1 × 105 cm/h 
C) 4.1 × 109 cm/h 
D) 1.1 × 106 cm/h 
E) 1.6 × 109 cm/h

Question 14

Which of these 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°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°C.

Question 15

When applying the scientific method,it is important to avoid any form of hypothesis.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following is not an SI base unit?

Accepted Answer

A) Meter 
B) Ampere 
C) Second 
D) Gram 
E) Kelvin 
A) Meter 
B) Ampere 
C) Second 
D) Gram 
E) Kelvin

Question 17

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 18

The SI prefix mega- (M)means

Accepted Answer

A) 10-6 
B) 10-3 
C) 103 
D) 106 
E) 109 
A) 10-6 
B) 10-3 
C) 103 
D) 106 
E) 109

Question 19

What is the equation used to calculate the mass from the density?

Accepted Answer

mass = den

Question 20

Explain the difference between an extensive property and an intensive property.

Accepted Answer

An extensive property depends

Exam 1: Chemistry: the Central Science

Which of the following cannot be separated into simpler substances by chemical means?

If a liquid contains 60% sugar and 40% water throughout its composition then what is it called?

Which of the following is an extensive property of oxygen?

A large pizza has a diameter of 15 inches.Express this diameter in centimeters.(1 in = 2.54 cm)

Given that 1 inch = 2.54 cm,1.00 cm3 is equal to

Burning wood in a fireplace is a __________ change.

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

If you have a graduated cylinder containing 15.5 mL and this volume changes to 95.2 mL after a metal with a mass of 7.95 g is dropped into the graduated cylinder,then what is the density of this metal?

What is a substance composed of atoms of two or more elements chemically united in fixed proportions?

What is something that has a definite composition?

How many milliliters is 0.0055 L?

Matter is anything that has mass and occupies space.

Some molecules move with speeds approaching the "escape velocity" from Earth,which is 7.0 miles per second.What is this speed in cm/h? (1 mi = 1609 m)

Which of these is an example of a physical property?

When applying the scientific method,it is important to avoid any form of hypothesis.

Which of the following is not an SI base unit?

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

The SI prefix mega- (M)means

What is the equation used to calculate the mass from the density?

Explain the difference between an extensive property and an intensive property.

Atoms Molecules and Ions

Stoichiometry Ratios of Combination

Reactions in Aqueous Solutions

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Electron Configuration and the Periodic Table

Chemical Bonding I Basic Concepts

Chemical Bonding Ii Molecular Geometry and Bonding Theories

Gases

Intermolecular Forces and the Physical Properties of Liquids and Solids

Modern Materials

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Environmental Chemistry

Coordination Chemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Organic Chemistry

Filters

Given that 1 inch = 2.54 cm,1.00 cm³ is equal to