Question 1

The correct answer for (1.22×103)×0.013 is:

Accepted Answer

A)  15.8 
B)  158 
C)  16 
D)  15.86 
E)  93846 
A)  15.8 
B)  158 
C)  16 
D)  15.86 
E)  93846

Question 2

Liquid Helium boils at 4 K. What temperature is this in degrees Fahrenheit?

Accepted Answer

A)  - 452 ° F 
B)  - 269 ° F 
C)  - 167 ° F 
D)  136 ° F 
E)  531 ° F 
A)  - 452 ° F 
B)  - 269 ° F 
C)  - 167 ° F 
D)  136 ° F 
E)  531 ° F

Question 3

A heat stroke normally occurs at 106 ° F. What temperature is this when converted to the Kelvin scale?

Accepted Answer

A)  - 232 K 
B)  - 50.2 K 
C)  223 K 
D)  314 K 
E)  496 K 
A)  - 232 K 
B)  - 50.2 K 
C)  223 K 
D)  314 K 
E)  496 K

Question 4

Three students measured the density of pure water in the laboratory. Their results are as follows:
Student 1:
Density = 1.20 g/mL Student 2:
Density = 1.21 g/mL Student 3:
Density = 1.19 g/mL The actual density of water at 25 ° C equals 0.997 g/mL. What do the results of these three experiments demonstrate when compared to the true density of water?

Accepted Answer

A)  High accuracy and high precision 
B)  High accuracy and low precision 
C)  Low accuracy and high precision 
D)  Low accuracy and low precision 
E)  None of these 
A)  High accuracy and high precision 
B)  High accuracy and low precision 
C)  Low accuracy and high precision 
D)  Low accuracy and low precision 
E)  None of these

Question 5

Which of the following would be considered a chemical change ?
I. Frost forms on the window
II. A Silver fork tarnishes
III. Toasting a slice of bread.

Accepted Answer

A)  I only 
B)  I and II 
C)  I and III 
D)  II and III 
E)  All of these 
A)  I only 
B)  I and II 
C)  I and III 
D)  II and III 
E)  All of these

Question 6

Three students measured the freezing temperature of water in the laboratory. Their results are as follows:
Student 1:
Freezing temperature = 2.86 ° C Student 2:
Freezing temperature = - 4.52 ° C Student 3:
Freezing temperature = 3.21 ° C The actual freezing temperature of water equals 0.00 ° C. The results of these three students when compared to the true freezing temperature of water demonstrates:

Accepted Answer

A)  High accuracy and high precision 
B)  High accuracy and low precision 
C)  Low accuracy and high precision 
D)  low accuracy and low precision 
E)  None of these 
A)  High accuracy and high precision 
B)  High accuracy and low precision 
C)  Low accuracy and high precision 
D)  low accuracy and low precision 
E)  None of these

Question 7

The temperature of liquid nitrogen is 77 K. What is this temperature on the Fahrenheit scale?

Accepted Answer

A)  - 196 ° F 
B)  - 321 ° F 
C)  350 ° F 
D)  662 ° F 
E)  - 385 ° F 
A)  - 196 ° F 
B)  - 321 ° F 
C)  350 ° F 
D)  662 ° F 
E)  - 385 ° F

Question 8

All of the following are properties of carbon dioxide, CO2. Which of the following is a chemical property of this substance?

Accepted Answer

A)  It reacts with water to form carbonic acid. 
B)  It is a colorless gas at room temperature and 1 atm pressure. 
C)  It is a solid below - 78 ° C. 
D)  Its density as a solid equals 1.35 g/mL. 
E)  None of these is a chemical property. 
A)  It reacts with water to form carbonic acid. 
B)  It is a colorless gas at room temperature and 1 atm pressure. 
C)  It is a solid below - 78 ° C. 
D)  Its density as a solid equals 1.35 g/mL. 
E)  None of these is a chemical property.

Question 9

Express a mass of 0.0220 kg in grams.

Accepted Answer

A)  22.0 g 
B)  2.20×10 - 5 g 
C)  2.20×10 - 3 g 
D)  4.84×10 - 2 g 
E)  0.0100 g 
A)  22.0 g 
B)  2.20×10 - 5 g 
C)  2.20×10 - 3 g 
D)  4.84×10 - 2 g 
E)  0.0100 g

Question 10

The speed of light in a vacuum is 2.998×108 m/s. What is this speed given in cm/min?

Accepted Answer

A)  1.799×1013 cm/min 
B)  1.799×1012 cm/min 
C)  4.997×108 cm/min 
D)  1.799×108 cm/min 
E)  4.997×104 cm/min 
A)  1.799×1013 cm/min 
B)  1.799×1012 cm/min 
C)  4.997×108 cm/min 
D)  1.799×108 cm/min 
E)  4.997×104 cm/min

Question 11

Which does not represent a scientific investigation?

Accepted Answer

A)  Weighing the results of an experiment to obtain quantitative data. 
B)  Weighing lab reports on a chemical balance to determine the grade. 
C)  Graphing the mass of a product as a function of the mass of the starting material. 
D)  Determining the temperature at which the maximal amount of product is obtained. 
E)  Trying different conditions if an initial experiment fails. 
A)  Weighing the results of an experiment to obtain quantitative data. 
B)  Weighing lab reports on a chemical balance to determine the grade. 
C)  Graphing the mass of a product as a function of the mass of the starting material. 
D)  Determining the temperature at which the maximal amount of product is obtained. 
E)  Trying different conditions if an initial experiment fails.

Question 12

Which of the following best describes an element?

Accepted Answer

A)  An element is a mixture that can be separated into simpler substances using physical methods . 
B)  An element is a mixture that can be separated into simpler substances using chemical methods . 
C)  An element is a pure substance that can be separated into simpler substances using physical methods . 
D)  An element is a pure substance that can be separated into simpler substances using chemical methods . 
E)  An element is a pure substance that cannot be separated into simpler substances using ordinary physical or chemical methods. 
A)  An element is a mixture that can be separated into simpler substances using physical methods . 
B)  An element is a mixture that can be separated into simpler substances using chemical methods . 
C)  An element is a pure substance that can be separated into simpler substances using physical methods . 
D)  An element is a pure substance that can be separated into simpler substances using chemical methods . 
E)  An element is a pure substance that cannot be separated into simpler substances using ordinary physical or chemical methods.

Question 13

What is the chemical symbol for the element tin ?

Accepted Answer

A)  T 
B)  Sn 
C)  Ti 
D)  Tn 
E)  St 
A)  T 
B)  Sn 
C)  Ti 
D)  Tn 
E)  St

Question 14

Which of the following processes is considered a chemical change ?
I. Corrosion of aluminum metal
II. Digesting a candy bar.
III. Melting of ice.

Accepted Answer

A)  I only 
B)  II only 
C)  III only 
D)  I and II 
E)  All of these 
A)  I only 
B)  II only 
C)  III only 
D)  I and II 
E)  All of these

Question 15

Which of the following volume measurements is the least precise measurement?

Accepted Answer

A)  1.0 mL 
B)  2.018 mL 
C)  2.02 mL 
D)  2.022 mL 
E)  3 mL 
A)  1.0 mL 
B)  2.018 mL 
C)  2.02 mL 
D)  2.022 mL 
E)  3 mL

The correct answer for (1.22×10³)×0.013 is:

Liquid Helium boils at 4 K. What temperature is this in degrees Fahrenheit?

A heat stroke normally occurs at 106 ° F. What temperature is this when converted to the Kelvin scale?

Which of the following would be considered a chemical change ? I. Frost forms on the window II. A Silver fork tarnishes III. Toasting a slice of bread.

The temperature of liquid nitrogen is 77 K. What is this temperature on the Fahrenheit scale?

All of the following are properties of carbon dioxide, CO₂. Which of the following is a chemical property of this substance?

Express a mass of 0.0220 kg in grams.

The speed of light in a vacuum is 2.998×10⁸ m/s. What is this speed given in cm/min?

Which does not represent a scientific investigation?

Which of the following best describes an element?

What is the chemical symbol for the element tin ?

Which of the following processes is considered a chemical change ? I. Corrosion of aluminum metal II. Digesting a candy bar. III. Melting of ice.

Which of the following volume measurements is the least precise measurement?

Atoms, Molecules, and Ions

Equations, the Mole, and Chemical Formulas

Chemical Reactions in Solution

Thermochemistry

The Gaseous State

Electronic Structure

The Periodic Table: Structure and Trends

Chemical Bonds

Molecular Structure and Bonding Theories

Liquids and Solids

Solutions

Chemical Kinetics

Chemical Equilibrium

Solutions of Acids and Bases

Reactions Between Acids and Bases

Chemical Thermodynamics

Electrochemistry

Transition Metals, Coordination Chemistry and Metallurgy

The Chemistry of Hydrogen, Elements in Groups 3A Through 6A, and the Noble Gases

Nuclear Chemistry

Organic Chemistry and Biochemistry

Filters

Exam 1: Introduction to Chemistry

The correct answer for (1.22×103)×0.013 is:

Liquid Helium boils at 4 K. What temperature is this in degrees Fahrenheit?

A heat stroke normally occurs at 106 ° F. What temperature is this when converted to the Kelvin scale?

Which of the following would be considered a chemical change ? I. Frost forms on the window II. A Silver fork tarnishes III. Toasting a slice of bread.

The temperature of liquid nitrogen is 77 K. What is this temperature on the Fahrenheit scale?

All of the following are properties of carbon dioxide, CO2. Which of the following is a chemical property of this substance?

Express a mass of 0.0220 kg in grams.

The speed of light in a vacuum is 2.998×108 m/s. What is this speed given in cm/min?

Which does not represent a scientific investigation?

Which of the following best describes an element?

What is the chemical symbol for the element tin ?

Which of the following processes is considered a chemical change ? I. Corrosion of aluminum metal II. Digesting a candy bar. III. Melting of ice.

Which of the following volume measurements is the least precise measurement?

Atoms, Molecules, and Ions

Equations, the Mole, and Chemical Formulas

Chemical Reactions in Solution

Thermochemistry

The Gaseous State

Electronic Structure

The Periodic Table: Structure and Trends

Chemical Bonds

Molecular Structure and Bonding Theories

Liquids and Solids

Solutions

Chemical Kinetics

Chemical Equilibrium

Solutions of Acids and Bases

Reactions Between Acids and Bases

Chemical Thermodynamics

Electrochemistry

Transition Metals, Coordination Chemistry and Metallurgy

The Chemistry of Hydrogen, Elements in Groups 3A Through 6A, and the Noble Gases

Nuclear Chemistry

Organic Chemistry and Biochemistry

Filters

The correct answer for (1.22×10³)×0.013 is:

All of the following are properties of carbon dioxide, CO₂. Which of the following is a chemical property of this substance?

The speed of light in a vacuum is 2.998×10⁸ m/s. What is this speed given in cm/min?