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Chemistry Fall Semester Exam Review

Total questions: 139

Worksheet time: 2hrs 34mins

Name
Class
Date
1.

One-twelfth the mass of a carbon atom having six protons and six neutrons

a)

mass number

b)

atomic mass unit

c)

atomic number

d)

atomicmass

2.

the number of protons in the nucleus of an element

a)

mass number

b)

atomic mass unit

c)

atomic number

d)

atomic mass

3.

atoms with the same number of protons, but different numbers of neutrons in the nucleus of an atom

a)

isotop

b)

atomic mass

c)

atomic number

d)

atomic mass unit

4.

the total number of protons and neutrons in the nucleus of an atom

a)

mass number

b)

atomic mass unit

c)

atomic number

d)

atomic mass

5.

the weighted average of the masses of the isotopes of an element

a)

isotope

b)

atomic mass

c)

atomic number

d)

atomic mass unit

6.

name for elements touching the stair-step line

a)

metalloids

b)

group

c)

period

d)

metals

7.

another name for a family on the periodic table

a)

metalloids

b)

Group

c)

Period

d)

Metals

8.

the majority of the elements on the periodic table

a)

metalloids

b)

Group

c)

Period

d)

Metals

9.

the side of the stair-step line where metals are found

a)

right

b)

left

c)

Nonmetals

d)

Metals

10.

elements that are on the right side of the stair-step line

a)

right

b)

left

c)

Nonmetals

d)

Metals

11.

the name given for a row going left to right across the periodic table

a)

metalloids

b)

Group

c)

Period

d)

Metals

12.

a positively charged subatomic particle

a)

proton

b)

nucleus

c)

atom

d)

electron

13.

the smallest particle of an element that retains the properties of that element

a)

proton

b)

nucleus

c)

atom

d)

electron

14.

a negatively charged subatomic particle

a)

neutron

b)

electron

c)

atom

d)

nucleus

15.

the central part of an atom, containing protons and neutrons

a)

proton

b)

nucleus

c)

atom

d)

electron

16.

a subatomic particle with no charge

a)

neutron

b)

electron

c)

atom

d)

nucleus

17.

which subatomic particle plays the greatest part in determining the properties of an element?

a)

electron

b)

proton

c)

neutron

d)

nucleus

18.

which of the following equals one atomic mass unit?

a)

the mass of one electron

b)

the mass of one carbon-12 atom

c)

the mass of one helium-4 atom

d)

one-twelfth the mass of one carbon-12 atom

19.

The nucleus of an atom is

a)

negatively charged and has a high density

b)

the central core and is composed of protons and neutrons.

c)

positively charged and has more protons than neutrons.

d)

negatively charged and has a low density.

20.

How many valence electrons are in an atom of phosphorus?

a)

5

b)

2

c)

4

d)

3

21.

Which of the following categories includes the majority of the elements?

a)

metals

b)

liquids

c)

nonmetals

d)

metalloids

22.

Which of the following elements is in the same period as phosphorus?

a)

nitrogen

b)

oxygen

c)

magnesium

d)

carbon

23.

What is the name given to the electrons in the highest occupied energy level of an atom?

a)

anions

b)

orbital electrons

c)

cations

d)

valence electrons

24.

The metals in Groups 1A, 2A, and 3A

a)

all form ions with a negative charge.

b)

gain electrons when they form ions.

c)

all have ions with a 1+ charge.

d)

lose electrons when they form ions.

25.

In which of the following is the number of neutrons correctly represented?

a)

has 108 neutrons

b)

has 146 neutrons

c)

has 24 neutrons

d)

has 0 neutrons

26.

Using the periodic table, determine the number of neutrons in 16O.

a)

16

b)

8

c)

4

d)

24

27.

Of the elements Pt, V, Li, and Kr, which is nonmetal?

a)

Li

b)

V

c)

Kr

d)

Pt

28.

Which of the following statements is true?

a)

Atoms of isotopes of an element have different numbers of electrons

b)

Atoms of isotopes of an element have different numbers of neutrons.

c)

Atoms of isotopes of an element have different numbers of protons.

d)

Atoms of the same element all have the same mass.

29.

The atomic number of an element is the total number of which particles in the nucleus?

a)

electrons

b)

protons

c)

protons and electrons

d)

neutrons

30.

How is the number of neutrons in the nucleus of an atom calculated?

a)

Subtract the number of electrons from the number of protons.

b)

Add the number of electrons and protons together.

c)

subtract the number of protons from the mass number.

d)

add the mass number to the number of electrons

31.

The sum of the protons and neutrons in an atom equals the

a)

mass number

b)

atomic number

c)

atomic mass

d)

nucleus number

32.

Isotopes of the same element have different

a)

atomic numbers

b)

numbers of electrons

c)

numbers of protons

d)

numbers of neutrons.

33.

How many valence electrons are in an atom of magnesium?

a)

3

b)

5

c)

4

d)

2

34.

All atoms of the same element have the same _____.

a)

number of neutrons

b)

number of protons

c)

mass number

d)

mass

35.

The smallest particle of an element that retains the properties of that element is a(n) _____.

a)

neutron

b)

proton

c)

atom

d)

electron

36.

Which of the following statements is true?

a)

Neutrons are negatively charged and have a mass of 1 amu.

b)

Electrons are negatively charged and have a mass of 1 amu.

c)

Protons are positively charged and have a mass of 1 amu.

d)

The nuclleus of an atom is positively charged and never has a mass of 1 amu.

37.

What does the number 84 in the name krypton-84 represent?

a)

the sum of the protons and electrons

b)

twice the number of protons

c)

the mass number

d)

the atomic number

38.

If E is the symbol for an element, which two of the following symbols represent isotopes of the same element?

a)

2 and 3

b)

1 and 2

c)

3 and 4

d)

1 and 4

39.

In which of the following sets is the symbol of the element, the number of protons, and the number of electrons given correctly?

a)

In

49 protons

49 electrons

b)

Cs

55 protons

132.9 electrons

c)

Zn

30 protons

60 electrons

d)

F

19 protons

19 electrons

40.

An element has an atomic number of 76. The number of protons and electrons in a neutral atom of the element are _____.

a)

152 protons and 76 electrons

b)

76 protons and 0 electrons

c)

38 protons and 38 electrons

d)

76 protons and 76 electrons

41.

Which of the following groupings contains only representative elements?

a)

Ni, Fe, Zn

b)

Al, Mg, Li

c)

Hg, Cr, Ag

d)

Cu, Co, Cd

42.

The atomic mass of an element is the _____.

a)

total mass of the isotopes of the element

b)

weighted average of the masses of the isotopes of the element.

c)

average of the mass number and the atomic number for the element

d)

total number of subatomic particles in its nucleus

43.

All atoms are

a)

neutral, with the number of protons equaling the number of electrons.

b)

positively charged, with the number of protons exceeding the number of electrons

c)

negatively charged, with the number of electrons exceeding the number of protons.

d)

neutral, with the number of protons equaling the number of electrons, which is equal to the number of neutrons.

44.

What unit is used to measure weighted average atomic mass?

a)

nanogram

b)

amu

c)

gram

d)

angstrom

45.

How many protons, electrons, and neutrons does an atom with atomic number 50 and mass number 125 contain?

a)

70 neutrons

75 protons

50 electrons

b)

120 neutrons

50 protons

75 neutrons

c)

50 protons

50 electrons

75 neutrons

d)

75 electrons

50 protons

50 neutrons

46.

The modern periodic table is arranged in order of increasing atomic _____.

a)

radius

b)

number

c)

mass

d)

charge

47.

In which of the following sets are the charges given correctly for all the ions?

a)

N-, O2-, F3-

b)

Rb-, Ba2-, P3+

c)

Na+, Mg+, Al+

d)

K+, Sr2+, O2-

48.

The particles that are found in the nucleus of an atom are_____.

a)

protons and neutrons

b)

neutrons and electrons

c)

protons and electrons

d)

electrons only

49.

What is the number of electrons in the outermost energy level of an oxygen atom?

a)

8

b)

6

c)

2

d)

4

50.

What is another name for the representative elements?

a)

Group A elements

b)

transition elements

c)

Group C elements

d)

Group B elements

51.

Which of the following is true for all chemical reactions?

a)

The total mass of the reactants equals the total mass of the products

b)

The total mass of the reactants increases

c)

The total mass of the products is less than the total mass of the reactants

d)

The total mass of the products is greater than the total mass of the reactants.

52.

Which of the following is a physical change?

a)

rotting of food

b)

corrosion

c)

explosion

d)

evaporation

53.

Which of the following processes involves a change in physical properties?

a)

rusting

b)

burning

c)

fermenting

d)

boiling

54.

A golf ball has more mass than a tennis ball because it

a)

contains more matter

b)

takes up more space

c)

has a definite composition

d)

contains different kinds of matter

55.

Which of the following is a mixture?

a)

sucrose

b)

mayonnaise

c)

table salt

d)

baking soda

56.

A substance that can be separated into two or more substances only by a chemical change is a(n)

a)

compound

b)

element

c)

solution

d)

mixture

57.

An example of an extensive property of matter is

a)

mass

b)

hardness

c)

temperature

d)

pressure

58.

Which of the following is a chemical change?

a)

grating cheese

b)

mixing two cheeses in a bowl

c)

fermenting of cheese

d)

melting cheese

59.

Which of the following may have more than one phase?

a)

a pure liquid

b)

a homogeneous mixture

c)

a pure solid

d)

a heterogeneous mixture

60.

Which of the following indicates that a chemical change has happened during cooking?

a)

Energy is transferred from the stove to a pan.

b)

Butter melts.

c)

Bubbles form in boiling water.

d)

The food darkens.

61.

Which of the following changes to a metal is a chemical change?

a)

rusting

b)

polishing

c)

bending

d)

melting

62.

Which of the following is a chemical property?

a)

hardness

b)

color

c)

freezing point

d)

ability to react with oxygen

63.

The first letter in a properly written chemical symbol is always

a)

capitalized

b)

bold faced

c)

underlined

d)

italicized

64.

Which of the following is a physical property of water?

a)

It is composed of hydrogen and oxygen

b)

It melts below room temperature

c)

It can be decomposed by electrolysis.

d)

It react with calcium metal to produce a basic solution.

65.

Which of the following is a chemical property of water at 4oC?

a)

its state

b)

its color

c)

its temperature

d)

its ability to decompose into hydrogen and oxygen

66.

Which of the following is a physical property?

a)

combustible

b)

ability to rust

c)

explosive

d)

melting point

67.

How do vapors and gases different?

a)

Generally, a gas is in the liquid state at room temperature and a vapor is in the solid state at room temperature.

b)

Generally, a gas is in the solid state at room temperature and a vapor is in the gaseous state at room temperature

c)

Generally, a gas is in the gaseous state at room temperature and a vapor is in either the solid state or liquid state at room temperature.

d)

The terms gas and vapor are always used interchangeably, there is no difference.

68.

Which of the following is a heterogeneous mixture?

a)

steel

b)

air

c)

salt water

d)

soil

69.

What must be done to be certain that a chemical change has taken place?

a)

Demonstrate that energy was absorbed by the reactants after the change.

b)

Check the composition of the sample before and after the change

c)

Check for the production of bubbles before and after the change

d)

demonstrate that a release of energy occurred after the change.

70.

Which state of matter has a definite volume and takes the shape of its container?

a)

solid

b)

liquid only

c)

gas only

d)

both liquid and gas

71.

When an iron nail is ground into powder, its mass _____.

a)

increases

b)

decreases

c)

stays the same

d)

cannot be determined

72.

In the chemical reaction in which sucrose is heated and decomposes to form carbon dioxide and water, which of the following is a reactant?

a)

heat

b)

sucrose

c)

water

d)

carbon dioxide

73.

Which of the following is true about compounds?

a)

They have compositions that vary.

b)

They have properties similar to those of their component elements

c)

They are substances

d)

They can be physically separated into their component elements.

74.

Which of the following is true about homgeneous mixtures?

a)

They are known as solutions.

b)

They consist of two or more phases.

c)

They are always liquids.

d)

They have compositions that never vary.

75.

A substance that forms a vapor is generally in what physical state at room temperature?

a)

solid

b)

liquid or solid

c)

liquid

d)

gas

76.

What is one difference between a mixture and a compound?

a)

A mixture can only be separated into its components by chemical means.

b)

A compound can only be separated into its components by chemical means

c)

A compound consists of more than one phase.

d)

A mixture must be uniform in composition

77.

Which of the following involves a chemical change?

a)

grinding

b)

melting

c)

decomposing

d)

mixing

78.

Which of the following can be classified as a mixture?

a)

pure water

b)

pure nitrogen

c)

pure gold

d)

pure air

79.

A horizontal row of the periodic table is usually referred to as a

a)

family.

b)

property.

c)

group.

d)

period.

80.

Separating a solid from a liquid by evaporating the liquid is called _____.

a)

condensation

b)

solution

c)

distillation

d)

filtration

81.

Which stat of matter expands when heated and is easy to compress?

a)

gas

b)

liquid only

c)

solid only

d)

both liquid and solid

82.

What happens to matter during a chemical reaction?

a)

Some matter is created.

b)

Matter is neither destroyed or created.

c)

Some matter is destroyed.

d)

Some matter is destroyed and some is created.

83.

Which of the following represents a compound?

a)

H2O

b)

O-16

c)

H

d)

H-3

84.

Which state of matter is characterized by having an indefinite shape, but a definite volume?

a)

gas

b)

liquid only

c)

solid only

d)

both liquid and solid

85.

Which state of matter takes both the shape and volume of its container?

a)

solid

b)

liquid only

c)

gas only

d)

both liquid and gas

86.

Which state of matter is characterized by having a definite shape and a definite volume?

a)

gas

b)

liquid only

c)

solid only

d)

both liquid and solid

87.

part of a sample having uniform composition and properties

a)

mixture

b)

product

c)

phase

d)

reactant

88.

starting substance in a chemical reaction

a)

vapor

b)

heterogeneous mixture

c)

reactant

d)

phase

89.

a physical blend of two or more components

a)

mixture

b)

product

c)

phase

d)

reactant

90.

not uniform in composition

a)

vapor

b)

heterogeneous mixture

c)

reactant

d)

phase

91.

gaseous state of substance that is a liquid or solid at room temperature

a)

vapor

b)

heterogeneous mixture

c)

reactant

d)

phase

92.

a substance formed in a chemical reaction

a)

mixture

b)

product

c)

phase

d)

reactant

93.

substance that cannot be changed into simpler substances by chemical means

a)

homogeneous

b)

element

c)

compound

d)

chemical reaction

94.

a process in which a liquid is boiled to produce a vapor that is condensed again into a liquid

a)

distillation

b)

mass

c)

chemical reaction

d)

compound

95.

describes mixture with a uniform composition

a)

homogeneous

b)

element

c)

compound

d)

chemical reaction

96.

process in which substances are changed into different substances

a)

distillation

b)

mass

c)

chemical reaction

d)

compound

97.

amount of matter an object contains

a)

distillation

b)

mass

c)

chemical reaction

d)

compound

98.

composed of two or more substances chemically combined in a fixed proportion

a)

homogeneous

b)

element

c)

compound

d)

chemical reaction

99.

the smallest particle of an element that retains the properties of that element

a)

proton

b)

nucleus

c)

atom

d)

electron

100.

a positively charged subatomic particle

a)

proton

b)

nucleus

c)

atom

d)

electron

101.

a negatively charged subatomic particle

a)

proton

b)

nucleus

c)

atom

d)

electron

102.

a subatomic particle with no charge

a)

neutron

b)

electron

c)

atom

d)

nucleus

103.

the central part of an atom, containing protons and neutrons

a)

proton

b)

nucleus

c)

atom

d)

electron

104.

The smallest particle of an element that retains the properties of that element is a(n) _____.

a)

atom

b)

electron

c)

proton

d)

neutron

105.

The atomic number of an element is the total number of which particles in the nucleus?

a)

neutrons

b)

protons

c)

electrons

d)

protons and electrons

106.

An element has an atomic number of 76. The number of protons and electrons in a neutral atom of the element are _____.

a)

152 protons and 76 electrons

b)

76 protons and 0 electrons

c)

38 protons and 38 electrons

d)

76 protons and 76 electrons

107.

What is the number of electrons in the outermost energy level of an oxygen atom?

a)

2

b)

4

c)

6

d)

8

108.

What is another name for the representative elements?

a)

Group A elements

b)

Group B elements

c)

Group C elements

d)

transition elements

109.

Which of the following elements is in the same period as phosphorus?

a)

carbon

b)

magnesium

c)

nitrogen

d)

oxygen

110.

Which subatomic particles plays the greatest part in determining the properties of an element?

a)

proton

b)

electron

c)

neutron

d)

nucleus

111.

How many valence electrons are in an atom of magnesium?

a)

2

b)

3

c)

4

d)

5

112.

What is the name given to the electrons in the highest occupied energy level of an atom?

a)

orbital electrons

b)

valence electrtons

c)

anions

d)

cations

113.

What is the charge on the strontium ion?

a)

2-

b)

1-

c)

1+

d)

2+

114.

How many electrons does barium have to give up to achieve a noble-gas electron configuration?

a)

1

b)

2

c)

3

d)

4

115.

What is the formula of the ion formed when potassium achieves noble-gas electron configuration?

a)

K2+

b)

K+

c)

K1-

d)

K2-

116.

Which of the following elements forms an ion with a 1- charge?

a)

fluorine

b)

hydrogen

c)

potassium

d)

sodium

117.

How many electrons does nitrogen gain in order to achieve a noble-gas electron configuration?

a)

1

b)

2

c)

3

d)

4

118.

What is the formula of the ion formed when phosphorus achieves a noble-gas electron configuration?

a)

P3+

b)

P2+

c)

P2-

d)

P3-

119.

What is the charge on the cation in the ionic compound sodium sulfide?

a)

0

b)

1+

c)

2+

d)

3+

120.

Which of the following occurs in an ionic bond?

a)

Oppositely charged ions attract

b)

Tow atoms share two electrons

c)

two atoms share more than two electrons

d)

like-charged ions attract

121.

What is the net charge of the ionic compound calcium fluoride?

a)

2-

b)

1-

c)

0

d)

1+

122.

What is the formula unit of sodium nitride?

a)

NaN

b)

Na2N

c)

Na3N

d)

NaN3

123.

What is the formula unit of aluminum oxide?

a)

AlO

b)

Al3O

c)

AlO3

d)

Al2O3

124.

Which of the following pairs of elements is most likely to form an ionic compound?

a)

magnesium and fluorine

b)

nitrogen and sulfur

c)

oxygen and chlorine

d)

sodium and aluminum

125.

Ionic compounds are normally in which physical state at room temperature?

a)

solid

b)

liquid

c)

gas

d)

plasma

126.

What type of ions have names ending in -ide?

a)

only cations

b)

only anions

c)

only metal ions

d)

only gaseous ions

127.

When Group 2A elements form ions, they

a)

lose two protons.

b)

gain two protons.

c)

lose two electrons.

d)

gain two electrons.

128.

What is the correct name for the N3- ion?

a)

nitrate ion

b)

nitrogen ion

c)

nitride ion

d)

nitrite ion

129.

Aluminum is a group 3A metal. Which ion does Al typically form?

a)

Al3-

b)

Al3+

c)

Al5-

d)

Al5+

130.

Which of the following compounds contains the lead (II) ion?

a)

PbO

b)

PbCl4

c)

Pb2O

d)

Pb2S

131.

What is the formula for the oxide ion?

a)

O2-

b)

O

c)

Oxygen

d)

Oxygen2-

132.

Write the formula for the compound barium oxide.

a)

Ba

b)

O

c)

BaO

d)

BAO

133.

What is the formula for the compound rubidium phosphide?

a)

RbP

b)

Rb3P

c)

Rb

d)

P

134.

What is the formula for the compound boron chloride.

a)

B3+

b)

Cl1-

c)

BCl3

d)

BCl

135.

What is the relative charge carried by an electron?

a)

-

b)

+

c)

1-

d)

1+

136.

What is the relative charge of a proton?

a)

+

b)

-

c)

1+

d)

1-

137.

Use the periodic table to determine the number of electrons in a neutral atom of lithium.

a)

1

b)

2

c)

3

d)

4

138.

Use the periodic table to determine the number of protons in an atom of barium.

a)

56

b)

50

c)

60

d)

6

139.

How many electrons are in an atom of gold?

a)

79

b)

7

c)

90

d)

9

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