Question 1

The majority of the volume of a gas is empty space.

Accepted Answer

A) True 
 B)False  True

Question 2

A mixture of citric acid and water is classified as homogeneous.What can you conclude from this description?

Accepted Answer

A)  citric acid and water are clear liquids
B)  the relative amounts of citric acid and water may vary
C)  citric acid is a solid
D)  water is present in a larger quantity compared to citric acid B

Question 3

Which is a pure substance ?

Accepted Answer

A)  element
B)  compound
C)  mixture
D)  both A and B D

Question 4

Define solid,liquid,and gas.
Explain the differences in the three phases of matter on both the macroscopic and
molecular levels.

Accepted Answer

The answer of Define solid,liquid,and gas.
Explain the differences in the...

Question 5

Suppose someone brought you an unidentified material.List five questions a chemist might ask in an attempt to identify the material.

Accepted Answer

The answer of Suppose someone brought you an unidentified material.List...

Question 6

Which is a solution?

Accepted Answer

A)  element
B)  compound
C)  homogeneous mixture
D)  heterogeneous mixture

Question 7

Which state of matter consists of particles held together firmly but not rigidly? These particles are held together by strong attractive forces,are in close contact with one another,
But are able to flow by one another.

Accepted Answer

A)  gas
B)  liquid
C)  solid
D)  vapor

Question 8

Which is a pure substance?

Accepted Answer

A)  table salt
B)  bronze
C)  air
D)  soil

Question 9

A well established hypothesis is often called a(n)

Accepted Answer

A)  observation
B)  fact
C)  theory
D)  law

Question 10

A liquid has a definite shape and a definite volume.

Accepted Answer

A) True 
 B)False

Question 11

Which state of matter consists of particles in regular,repeating,three dimensional geometrical patterns?

Accepted Answer

A)  liquid
B)  vapor
C)  solid
D)  gas

Question 12

Which is a pure substance existing as different phases in a heterogeneous system?

Accepted Answer

A)  Salt dissolved in water.
B)  Flour suspended in water.
C)  Cork floating in water.
D)  Ice floating in water.

Question 13

"When Jill opened the bottle containing a clear liquid,the whole room smelled likeroses." Based on this statement we can infer that:

Accepted Answer

A)  The liquid is a homogeneous mixture.
B)  The liquid is a compound.
C)  Inside the bottle there were a liquid and a gas.
D)  Opening the bottle caused the liquid to evaporate.

Question 14

Which is a pure substance?

Accepted Answer

A)  compound
B)  mixture
C)  solution
D)  both B and C

Question 15

Air is a substance.

Accepted Answer

A) True 
 B)False

Question 16

The statement,"An apple a day keeps the doctor away",is best described as a(n)

Accepted Answer

A)  observation
B)  law
C)  theory
D)  hypothesis

Question 17

Which phase of matter can be compressed or expanded to the greatest degree?

Accepted Answer

A)  solid
B)  gas
C)  crystal
D)  liquid

Question 18

Define matter.
Explain what is meant by mass and volume.
Is everything in nature matter? If not,what else exists?

Accepted Answer

The answer of Define matter.
Explain what is meant by mass...

Question 19

Matter is classified into substances and mixtures.
Explain how these are different.
Substances are either elements or compounds.Describe what these are and give examplesof each.
Mixtures can be either heterogeneous or homogeneous.Explain how these are differentand give examples of each.
What is a solution? Give examples of solutions.

Accepted Answer

The answer of Matter is classified into substances and mixtures.
Explain...

Question 20

Which phase of matter contains the greatest force of attraction between particles?

Accepted Answer

A)  solid
B)  vapor
C)  liquid
D)  gas

Exam 1: An Introduction to Chemistry

The majority of the volume of a gas is empty space.

A mixture of citric acid and water is classified as homogeneous.What can you conclude from this description?

Which is a pure substance ?

Define solid,liquid,and gas. Explain the differences in the three phases of matter on both the macroscopic and molecular levels.

Suppose someone brought you an unidentified material.List five questions a chemist might ask in an attempt to identify the material.

Which is a solution?

Which state of matter consists of particles held together firmly but not rigidly? These particles are held together by strong attractive forces,are in close contact with one another, But are able to flow by one another.

Which is a pure substance?

A well established hypothesis is often called a(n)

A liquid has a definite shape and a definite volume.

Which state of matter consists of particles in regular,repeating,three dimensional geometrical patterns?

Which is a pure substance existing as different phases in a heterogeneous system?

"When Jill opened the bottle containing a clear liquid,the whole room smelled likeroses." Based on this statement we can infer that:

Which is a pure substance?

Air is a substance.

The statement,"An apple a day keeps the doctor away",is best described as a(n)

Which phase of matter can be compressed or expanded to the greatest degree?

Define matter. Explain what is meant by mass and volume. Is everything in nature matter? If not,what else exists?

Which phase of matter contains the greatest force of attraction between particles?