Question 1

An example of a chemical change is browning of meat.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following statements about chemistry is NOT true?

Accepted Answer

A) Chemistry is an important component of the economy of the United States. 
B) Chemistry affects every area of our daily lives. 
C) Chemical products account for 10% of U.S.exports every year. 
D) All of the above are true. 
A) Chemistry is an important component of the economy of the United States. 
B) Chemistry affects every area of our daily lives. 
C) Chemical products account for 10% of U.S.exports every year. 
D) All of the above are true.

Question 3

The melting point of fluorine,F,is -220°C.What is this temperature on the Kelvin scale?

Accepted Answer

A) 320 K 
B) 120 K 
C) 493 K 
D) 53 K 
A) 320 K 
B) 120 K 
C) 493 K 
D) 53 K

Question 4

Mass is ________ no "matter" where you are in the universe.

Accepted Answer

constant (

Question 5

Explain the impact of the U.S.chemical industry on trade with other nations.

Accepted Answer

The U.S. chemical industry has a signifi

Question 6

Chemist A claims that a new compound will inhibit the growth of a virulent strain of bacteria.When Chemist B from a different laboratory tests the compound against the same bacterial strain,the bacteria grow at their normal rate.Which of the following statements best describes what has happened?

Accepted Answer

A) The claim is correct, because the test has been replicated. 
B) The claim is incorrect, because the test has been replicated. 
C) The claim is incorrect, because the test has not been replicated. 
D) The claim is correct, because the data is not falsifiable. 
A) The claim is correct, because the test has been replicated. 
B) The claim is incorrect, because the test has been replicated. 
C) The claim is incorrect, because the test has not been replicated. 
D) The claim is correct, because the data is not falsifiable.

Question 7

Which of the following represents an element?

Accepted Answer

A) HF 
B) Se 
C) F₂ 
D) CO₂ 
A) HF 
B) Se 
C) F₂ 
D) CO₂

Question 8

A molecule

Accepted Answer

A) is a charged atom. 
B) consists of one proton. 
C) is the smallest characteristic part of a compound. 
D) consists of a mixture of two ions. 
A) is a charged atom. 
B) consists of one proton. 
C) is the smallest characteristic part of a compound. 
D) consists of a mixture of two ions.

Question 9

Methapyrilene,once an active ingredient in certain over-the-counter sleeping pills,was found to be a potent carcinogen (a substance that causes cancer).The pills were also found to be about as effective as placebos in promoting sleep.The desirability quotient (DQ)for methapyrilene is

Accepted Answer

A) low. 
B) moderate. 
C) high. 
D) uncertain. 
A) low. 
B) moderate. 
C) high. 
D) uncertain.

Question 10

Science does not prove a theory or hypothesis to be true.It can only prove something false.

Accepted Answer

A) True 
 B)False

Question 11

The prefix centi means ________.

Accepted Answer

A) 1/1,000 
B) 1/100 
C) 1/10 
D) 100 
A) 1/1,000 
B) 1/100 
C) 1/10 
D) 100

Question 12

Scientific results must be verified by

Accepted Answer

A) constructing plausible theories. 
B) consulting noted scientific authorities. 
C) further experiment. 
D) government agencies. 
A) constructing plausible theories. 
B) consulting noted scientific authorities. 
C) further experiment. 
D) government agencies.

Question 13

The prefix giga means ________.

Accepted Answer

A) 1,000 
B) 1,000,000,000,000 
C) 1,000,000 
D) 1,000,000,000 
A) 1,000 
B) 1,000,000,000,000 
C) 1,000,000 
D) 1,000,000,000

Question 14

Which of the following statements about the size of temperature units is NOT true?

Accepted Answer

A) 1 Celsius degree is equal to 1 kelvin. 
B) 1 Celsius degree is bigger than 1 kelvin. 
C) 1 kelvin is bigger than 1 Fahrenheit degree. 
D) 1 Celsius degree is bigger than 1 Fahrenheit degree. 
A) 1 Celsius degree is equal to 1 kelvin. 
B) 1 Celsius degree is bigger than 1 kelvin. 
C) 1 kelvin is bigger than 1 Fahrenheit degree. 
D) 1 Celsius degree is bigger than 1 Fahrenheit degree.

Question 15

The SI unit of length is the kilometer.

Accepted Answer

A) True 
 B)False

Question 16

The melting of ice is an example of a(n)________ change.

Accepted Answer

The answer of The melting of ice is an example...

Question 17

What is the chemical symbol for potassium?

Accepted Answer

A) P 
B) Po 
C) Pu 
D) K 
A) P 
B) Po 
C) Pu 
D) K

Question 18

Rachel Carson was an early proponent of

Accepted Answer

A) environmental awareness. 
B) conservation. 
C) pesticides to improve crops. 
D) using insects to improve pollination. 
A) environmental awareness. 
B) conservation. 
C) pesticides to improve crops. 
D) using insects to improve pollination.

Question 19

The negative impact of the overuse of pesticides on plant and animal life is an example a topic in the book by ________.

Accepted Answer

The answer of The negative impact of the overuse of...

Question 20

Briefly describe the central role of chemistry in science.Use an example.

Accepted Answer

The central role of chemistry in science

Exam 1: Chemistry

An example of a chemical change is browning of meat.

Which of the following statements about chemistry is NOT true?

The melting point of fluorine,F,is -220°C.What is this temperature on the Kelvin scale?

Mass is ________ no "matter" where you are in the universe.

Explain the impact of the U.S.chemical industry on trade with other nations.

Chemist A claims that a new compound will inhibit the growth of a virulent strain of bacteria.When Chemist B from a different laboratory tests the compound against the same bacterial strain,the bacteria grow at their normal rate.Which of the following statements best describes what has happened?

Which of the following represents an element?

A molecule

Methapyrilene,once an active ingredient in certain over-the-counter sleeping pills,was found to be a potent carcinogen (a substance that causes cancer).The pills were also found to be about as effective as placebos in promoting sleep.The desirability quotient (DQ)for methapyrilene is

Science does not prove a theory or hypothesis to be true.It can only prove something false.

The prefix centi means ________.

Scientific results must be verified by

The prefix giga means ________.

Which of the following statements about the size of temperature units is NOT true?

The SI unit of length is the kilometer.

The melting of ice is an example of a(n)________ change.

What is the chemical symbol for potassium?

Rachel Carson was an early proponent of

The negative impact of the overuse of pesticides on plant and animal life is an example a topic in the book by ________.

Briefly describe the central role of chemistry in science.Use an example.

Atoms

Atomic Structure

Chemical Bonds

Chemical Accounting

Gases, Liquids, Solids, and Intermolecular Forces

Acids and Bases

Oxidation and Reduction

Organic Chemistry

Polymers

Nuclear Chemistry

Chemistry of the Earth

Air

Water

Energy

Biochemistry

Food

Drugs

Fitness and Health

Chemistry Down on the Farm

Household Chemicals

Poisons

Filters