Question 1

The melting point of a compound is 2400 K.What is this temperature on the Celsius scale?

Accepted Answer

A) 2673°C 
B) 2300°C 
C) 2188°C 
D) 2127°C 
A) 2673°C 
B) 2300°C 
C) 2188°C 
D) 2127°C

Question 2

Refined white table sugar is usually derived from either sugar cane or sugar beets.Irrespective of the source of table sugar,after refining it always has the same composition of carbon,hydrogen and oxygen.Sugar is best classified as which one of the following?

Accepted Answer

A) ideal mixture 
B) element 
C) compound 
D) mixture 
A) ideal mixture 
B) element 
C) compound 
D) mixture

Question 3

A mixture of iron,salt and sand can be separated using a magnet,water,a filter and a hot plate.Think about this separation.The separation of this mixture

Accepted Answer

A) uses only physical changes or processes. 
B) uses only chemical changes or processes. 
C) uses both chemical and physical changes or processes. 
D) cannot be done with the materials listed. 
A) uses only physical changes or processes. 
B) uses only chemical changes or processes. 
C) uses both chemical and physical changes or processes. 
D) cannot be done with the materials listed.

Question 4

Vinegar is composed of approximately 5% acetic acid and 95% water.Which one of the following is the best classification of vinegar?

Accepted Answer

A) pure substance 
B) element 
C) compound 
D) mixture 
A) pure substance 
B) element 
C) compound 
D) mixture

Question 5

Which developed first?

Accepted Answer

A) technology 
B) chemistry 
C) alchemy 
D) natural philosophy 
A) technology 
B) chemistry 
C) alchemy 
D) natural philosophy

Question 6

The purification of water by distillation is a(n)________ process.

Accepted Answer

The answer of The purification of water by distillation is...

Question 7

Which of the following is equal to 1 mL?

Accepted Answer

A) 1 cm³ 
B) 1000 cm³ 
C) 1 dm³ 
D) 0.01 L 
A) 1 cm³ 
B) 1000 cm³ 
C) 1 dm³ 
D) 0.01 L

Question 8

The prefix milli means ________.

Accepted Answer

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

Question 9

Archaeological evidence indicates that ancient Egyptians were brewing beer and other fermented beverages over 4000 years ago.In the mid-19th century,French scientist Louis Pasteur discovered and explained the source of fermentation using yeast.This example illustrates that

Accepted Answer

A) scientific knowledge may come before technological knowledge. 
B) technological knowledge may come before scientific knowledge. 
C) science and technology mean the same thing. 
D) science and technology are not related. 
A) scientific knowledge may come before technological knowledge. 
B) technological knowledge may come before scientific knowledge. 
C) science and technology mean the same thing. 
D) science and technology are not related.

Question 10

Density is equal to volume divided by mass.

Accepted Answer

A) True 
 B)False

Question 11

The words science and technology are often used incorrectly as synonyms.Distinguish these two terms.Use an example of each.

Accepted Answer

Science and technology are related conce

Question 12

The desirability quotient,DQ,is equal to risks/benefits.

Accepted Answer

A) True 
 B)False

Question 13

Composition and structure are both terms used to describe the kinds of atoms that are present in a substance.

Accepted Answer

A) True 
 B)False

Question 14

In the SI system of measurement,the unit of length is the

Accepted Answer

A) kilogram. 
B) meter. 
C) liter. 
D) yard. 
A) kilogram. 
B) meter. 
C) liter. 
D) yard.

Question 15

The density of gold is 19.3 g/cm³.What is the volume of a 50.00 g gold ingot?

Accepted Answer

A) 0.5000 cm³ 
B) 2.593 cm³ 
C) 50.00 cm³ 
D) 965.0 cm³ 
A) 0.5000 cm³ 
B) 2.593 cm³ 
C) 50.00 cm³ 
D) 965.0 cm³

Question 16

How many kilometers are in 800 m?

Accepted Answer

A) 0.008 
B) 0.08 
C) 0.8 
D) 800 
A) 0.008 
B) 0.08 
C) 0.8 
D) 800

Question 17

A variable

Accepted Answer

A) does not change over the course of the experiment. 
B) is something that can change over the course of an experiment. 
C) does not affect the outcome of an experiment. 
D) can be controlled. 
A) does not change over the course of the experiment. 
B) is something that can change over the course of an experiment. 
C) does not affect the outcome of an experiment. 
D) can be controlled.

Question 18

What is natural philosophy?

Accepted Answer

A) a belief in natural foods 
B) an experimental approach to philosophy 
C) an experimental approach to the study of nature 
D) theoretical speculation about nature 
A) a belief in natural foods 
B) an experimental approach to philosophy 
C) an experimental approach to the study of nature 
D) theoretical speculation about nature

Question 19

What is the name of the element with the symbol Hg?

Accepted Answer

A) silver 
B) gold 
C) mercury 
D) antimony 
A) silver 
B) gold 
C) mercury 
D) antimony

Question 20

John eats shrimp for the first time and develops chills and a fever that evening.He can therefore conclude that eating shrimp was the cause of his fever and chills.

Accepted Answer

A) True 
 B)False

Exam 1: Chemistry

The melting point of a compound is 2400 K.What is this temperature on the Celsius scale?

Refined white table sugar is usually derived from either sugar cane or sugar beets.Irrespective of the source of table sugar,after refining it always has the same composition of carbon,hydrogen and oxygen.Sugar is best classified as which one of the following?

A mixture of iron,salt and sand can be separated using a magnet,water,a filter and a hot plate.Think about this separation.The separation of this mixture

Vinegar is composed of approximately 5% acetic acid and 95% water.Which one of the following is the best classification of vinegar?

Which developed first?

The purification of water by distillation is a(n)________ process.

Which of the following is equal to 1 mL?

The prefix milli means ________.

Archaeological evidence indicates that ancient Egyptians were brewing beer and other fermented beverages over 4000 years ago.In the mid-19th century,French scientist Louis Pasteur discovered and explained the source of fermentation using yeast.This example illustrates that

Density is equal to volume divided by mass.

The words science and technology are often used incorrectly as synonyms.Distinguish these two terms.Use an example of each.

The desirability quotient,DQ,is equal to risks/benefits.

Composition and structure are both terms used to describe the kinds of atoms that are present in a substance.

In the SI system of measurement,the unit of length is the

The density of gold is 19.3 g/cm³.What is the volume of a 50.00 g gold ingot?

How many kilometers are in 800 m?

A variable

What is natural philosophy?

What is the name of the element with the symbol Hg?

John eats shrimp for the first time and develops chills and a fever that evening.He can therefore conclude that eating shrimp was the cause of his fever and chills.

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