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Chemistry Final Exam Review

Total questions: 101

Worksheet time: 25hrs 15mins

Name
Class
Date
1.

An ionic bond is between

a)

metal and metal

b)

metal and nonmetal

c)

nonmetal and nonmetal

2.

A covalent bond is between

a)

metal and metal

b)

metal and nonmetal

c)

nonmetal and nonmetal

3.

A metallic bond is between

a)

metal and metal

b)

metal and nonmetal

c)

nonmetal and nonmetal

4.

What is the oxidation number for Carbon?

a)

+4 and -4

b)

-3

c)

+1

5.

What is the oxidation number for Nitrogen?

a)

+4 and -4

b)

-3

c)

+1

6.

Which one shows the items in the image from HIGH density to LOW density:

a)

honey, dish soap, water

b)

water, dish soap, honey

7.

Which item has the highest density #?

a)

honey

b)

dish soap

c)

water

d)

vegetable oil

8.

Which name represents the formula  Fe2O3Fe_2O_3  ?

a)

Iron (III) oxide

b)

Iron (II) oxide

9.

Which is the electron configuration of an atom of Period 2 element?

a)

1s22s1

b)

1s22s22p63s1

10.

Alkali metals have...

a)

1 valence electron, +1 charge

b)

2 valence electrons, +2 charge

c)

1 valence electrons, -1 charge

11.

Decomposing of an apple is an example of...

a)

chemical change

b)

physical change

12.

Which one is the least reactive group?

a)

Alkali metal

b)

Alkali earth metal

c)

Halogens

d)

Noble Gases

13.

Which answer is an example of a chemical change?

a)

Boiling water

b)

rusting iron

c)

dissolving powder

d)

freezing water

14.

Which answer is an example of a physical change?

a)

freezing water

b)

burning coal

c)

rusting iron

d)

baking a cake

15.

1s22s22p63s23p63d104s24p3

Which element does this configuration belong to?

a)

Arsenic

b)

Calcium

c)

Lithium

d)

Aluminum

16.

Which of the following are examples of Physical Changes?

a)

shape, length, mass

b)

reactivity, flammability, corrosive

c)

freezing, melting, boiling

17.

Atoms of the same element that have different numbers of neutrons.

a)

Isotope

b)

Covalent Bond

c)

Enzymes

d)

Ionic Bonds

18.

Particles in an atom that are neutral and have no charge are

a)

negatrons

b)

electrons

c)

neutrons

d)

protons

19.

A covalent bond is formed as a result of

a)

transferring electrons

b)

sharing electrons

c)

transferring protons

d)

sharing protons

20.

Subatomic particles found on the outermost shell & responsible for the atom's reactivity

a)

neutrons

b)

valence electrons

c)

isotopes

d)

ions

21.
Measure mainly of the nuclear particles: protons + neutrons
a)
Subatomic Particles
b)
Atomic Number
c)
Atomic Mass
d)
Gluons
22.
Value representing the number of protons in an element
a)
Atomic Mass
b)
Mass Number
c)
Valence Electrons
d)
Atomic Number
23.

How many valence electrons does this picture show?

a)

2

b)

3

c)

4

d)

5

e)

6

24.

The number 16 for the atomic element sulfur is the

a)

ionic number

b)

isotope

c)

atomic mass

d)

atomic number

25.
What is the atomic number for an element with 41 neutrons and a mass number of 80?
a)
39
b)
41
c)
80
d)
121
26.
Which element has chemical properties that are most similar to the chemical properties of sodium?
a)
a. Mg
b)
b. K
c)
c. Se
d)
d. Cl
27.
An element that is malleable and a good conductor of heat and electricity could have an atomic number of
a)
a. 16
b)
b. 18
c)
c. 29
d)
d. 35
28.

The lease electronegative elements are the

a)

halogens

b)

alkaline earth metals

c)

alkali metals

d)

metalloids

29.

In ionic bonds, valence electrons are:

a)

equally shared

b)

transferred

c)

destroyed

d)

unequally shared

30.

Which will have the biggest ionization energy?

a)

carbon

b)

beryllium

c)

boron

d)

lithium

31.

The mass number of an atom is determined by

a)

adding the neutrons and electrons

b)

the number of protons only

c)

adding protons and electrons

d)

adding the neutrons and protons

32.

The elements with the largest atomic radii are found in the:

a)

lower left-hand corner of the periodic table

b)

lower right-hand corner of the periodic table

c)

upper right-hand corner of the periodic table

d)

upper left-hand corner of the periodic table

33.

In non-polar covalent bonds, valence electrons are

a)

destroyed

b)

unequally shared

c)

equally shared

d)

transferred

34.

MgSO4 + KOH --> Mg(OH)2 + K2SO4

When this equation is balanced, what is the coefficient in front of KOH?

a)

1

b)

2

c)

3

d)

4

35.

The elements highlighted in orange are known as the

a)

alkaline earth metals

b)

alkali metals

c)

noble gases

d)

halogens

e)

transition metals

36.

The elements highlighted in red are known as the

a)

alkaline earth metals

b)

alkali metals

c)

noble gases

d)

halogens

e)

transition metals

37.

What is the correct name for the compound P2S4?

a)

phosphorus sulfide

b)

phosphorus (II) sulfide

c)

diphosphorus tetrasulfide

d)

phosphorus disulfate

38.

Which of these is an ionic compound?

a)

K2O

b)

H3PO4

c)

CBr4

39.

What type of reaction is this?

a)

synthesis

b)

decomposition

c)

single replacement

d)

double replacement

e)

combustion

40.

What type of reaction is this?

a)

synthesis

b)

decomposition

c)

single replacement

d)

double replacement

e)

combustion

41.

What type of reaction is this?

a)

synthesis

b)

decomposition

c)

single replacement

d)

double replacement

e)

combustion

42.

A piece of rock weighs 7.0 g and takes up 1.2 cm3 of space. Calculate the density of the rock. Round your answer to the correct significant figures.

a)

0.17 g/cm3

b)

0.2 g/cm3

c)

5.83 g/cm3

d)

5.8 g/cm3

e)

6 g/cm3

43.

How many protons, neutrons, and electrons are in this calcium atom?

a)

40 protons, 20 neutrons, and 2 electrons

b)

20 protons, 20 neutrons, and 20 electrons

c)

20 protons, 20 neutrons, and 18 electrons

d)

20 protons, 20 neutrons, and 22 electrons

e)

20 protons, 40 neutrons, and 22 electrons

44.

Which letter represents the protons?

a)

A

b)

B

c)

C

d)

D

45.

Balance the following reaction:

___Pb(OH)2 (s) → ___PbO (s) + ___H2O (g)

a)

1:1:1

b)

2:1:2

c)

1:1:2

d)

2:2:1

46.
__Al + __Fe3N2 -->__AlN + __Fe
a)
already balanced
b)
4,2,4,6
c)
2,1,2,3
d)
1,2,1,3
47.

Which of the following statements is NOT true about what happens in all chemical reactions?

a)

The ways in which atoms are joined together change

b)

New atoms are formed as products

c)

The starting substances are called reactants

d)

The bonds of reactants are broken and new bonds of products are formed

48.
What is the total number of electrons in a Mg2+ ion?
a)
a. 10
b)
b. 2
c)
c. 12
d)
d. 24
49.

A K atom differs from a K+ ion in that the K atom has one

a)

a. more electron

b)

b. less electron

c)

c. more proton

d)

d. less proton

50.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
51.
An irregularly-shaped sample of aluminum (Al) is put on a balance and found to have a mass of 43.6 g.  The student decides to use the water-displacement method to find the volume.  The initial volume reading is  25.5 mL and, after the Al sample is added, the water level has risen to 41.7 mL.  Find the density of the Al sample.
a)
2.69 g/mL
b)
0.649 g/mL
c)
1.71 g/mL
d)
1.05 g/mL
52.

How many neutrons does Chlorine have?

a)

18

b)

17

c)

35

d)

52

53.

All atoms are most stable with (or would "prefer") how many electrons in their valence shell?

a)

1

b)

2

c)

8

d)

18

54.

What groups are the most reactive metals?

a)

2

b)

7A

c)

1

d)

17

55.

Why are halogens so reactive?

a)

They want to get rid of their only valance electron

b)

They only need one more electron

c)

They are non reactive, they have a full shell

56.
As you move down a group, atomic radius increases because - 
a)
you add more and more neutrons
b)
you add more and more protons
c)
you add more and more shells (energy levels)
d)
you add more atomic mass
57.
As you move across the periodic table from left to right, the atomic radius decreases.  This is because - 
a)
the number of protons increases, so attraction to electrons increases
b)
the number of energy levels increases
c)
the number of electrons increases
d)
the atomic mass increases
58.
Francium (Fr) has the lowest ionization energy in Group 1 because - 
a)
it has the smallest number of valence electrons
b)
it has the greatest atomic mass
c)
it has the greatest number of protons, so it attracts its electrons the strongest
d)
its 1 valence electron is very far from the nucleus, so little energy is needed to remove it
59.
Electronegativity is...
a)
the ability of an atom to attract/ accept electrons
b)
the ability of an atom to lose electrons
c)
the energy required to remove an electron from a specific atom
d)
how easy it is to make friends. 
60.
13.  What is the correct electron configuration for Calcium?
a)
a.  1s2,2s2,2p6,3s2,3p6,4s1
b)
a.  1s2,2s2,2p6,3s2,3p6,4s2
c)
a.  1s2,2s2,2p6,3s2,3p5,4s2
d)
1s2,2s2,2p6,3s3,3p5,4s1
61.
24.1% of all the isotopes of a an element have a mass of 75.23 amu, 48.7% have a mass of 74.61 amu, and 27.2% have a mass of 75.20 amu.
What is the average mass of this element?
a)
74.92 amu
b)
24.97 amu
c)
75.01 amu
d)
74.51 amu
62.
4.35% of all X atoms have a mass of 39.946 amu. 83.79% have a mass of 41.941 amu, 9.50% have a mass of 42.941 amu, and 2.36% have a mass of 43.939 amu. What is the average atomic mass of atom X?
a)
41.97 amu
b)
42.19 amu
c)
10.43 amu
d)
40.04 amu
63.
Nitrogen has three occurring isotopes: Nitrogen-13, Nitrogen-14, Nitrogen-15. Which isotope is the most abundant?
a)
Nitrogen-13
b)
Nitrogen-14
c)
Nitrogen-15
d)
Based on the information given, it cannot be determined
64.
The photo above shows the isotopic notation for which isotope?
a)
Carbon 12
b)
Carbon 13
c)
Carbon 14
d)
Carbon 15
65.
Different isotopes have...
a)
different masses
b)
different atomic numbers
c)
different electrons
d)
different protons
66.
How many neutrons does a Calcium 48 isotope have?
a)
16
b)
20
c)
28
d)
12
67.

If an element is diatomic it should have a subscript of___

a)

1, always

b)

2, only when it is an element

c)

it shouldn't have a subscript, it should have a coefficent

d)

2, when bonded in a compound

68.

Predict the products for the this Single Replacement reaction:

K + HCl →

a)

KCl + H2

b)

KHCl

c)

KH + Cl2

d)

HCl + K2

69.

Predict the products for the this Double Replacement reaction:

AgNO3 + KCl →

a)

AgCl + KNO3

b)

AgK + ClNO3

c)

KAg + NO3Cl

d)

AgCl + 3 KNO

70.

Complete the balanced equation for this Double Replacement reaction.

3 NaOH + Fe(NO3)3 →

a)

NaFe + OH(NO3)3

b)

NaNO3 + Fe(OH)3

c)

3 NaNO3 + Fe(OH)3

d)

3 NaFe + 3 (OH)NO3

71.

Predict the products for this equation.

(Zn with a charge of +2)

Zn + H2SO4 -->

a)

Zn(SO4)2 + H

b)

ZnSO4 + H2

c)

ZnSO4 + H4

72.

What is the correct way of representing hydrogen gas alone, in a reaction?

a)

2H

b)

H

c)

H2

73.

Which has the strongest forces between particles (usually)?

a)

ionic bonding

b)

metallic bonding

c)

covalent bonding

74.

Which has the weakest forces between particles (usually)?

a)

ionic bonding

b)

metallic bonding

c)

covalent bonding

75.

Which substance has the weakest intermolecular forces?

a)

Substance A, boiling point of 75 °C

b)

Substance B, boiling point of 105 °C

c)

Substance C, boiling point of 25 °C

d)

Substance d, boiling point of 45 °C

76.

The weaker the intermolecular forces of a substance the _____________ the boiling point

a)

higher

b)

lower

77.
In general, substances with stronger intermolecular forces have ___________  boiling points than those with weaker intermolecular forces
a)
higher
b)
lower
78.

Is the following molecule polar or nonpolar?

a)

polar

b)

nonpolar

79.
F2
a)
Polar 
b)
Nonpolar 
80.
H2O
a)
Polar 
b)
Nonpolar 
81.

When two atoms of the same nonmetal element bond together, they form a(n)

a)

ionic bond.

b)

nonpolar covalent bond.

c)

polar covalent bond.

d)

James Bond.

82.

Which of the following pairs of elements is most likely to form an ionic bond? (You should refer to a Periodic table.)

a)

sulfur and oxygen

b)

sulfur and fluorine

c)

sodium and sulfur

d)

oxygen and fluorine

83.

__________ bonds involve an unequal sharing of electrons, while __________ bonds involve an equal sharing of electrons.

a)

Nonpolar, polar

b)

Polar, metallic

c)

Metallic, nonpolar

d)

Polar, nonpolar

84.
What type of bond is shown in this image?
a)
Ionic
b)
Polar Covalent
c)
Nonpolar Covalent
d)
Van der Waals Force
85.

What type of bond is depicted in the image?

a)

Nonpolar Covalent

b)

Polar Covalent

c)

Ionic

86.

What is a positive ion called?

a)

anion

b)

cation

c)

isotope

d)

covalent

87.

What is a negative ion called?

a)

anion

b)

cation

c)

covalent

d)

isotope

88.

Why do elements form bonds?

a)

to get a charge

b)

so they can make friends

c)

to become stable by getting a full valence shell

d)

to become stable by increasing their mass

89.

How many electrons would a Nitrogen ion gain/lose?

a)

lose 5

b)

gain 5

c)

lose 3

d)

gain 3

90.

Which electron configuration belongs to a Chloride (Cl-) ion?

a)

1s2 2s2 2p6 3s2 3p5

b)

1s2 2s2 2p6 3s2 3p6

c)

1s2 2s2 2p6 3s2 3p7

d)

1s2 2s2 2p6 3p7

91.
What electron configuration matches an oxygen ion?
a)
1s22s22p63s2, 3p64s23d104p5
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p64s23d1
92.
What electron configuration matches an oxygen ion?
a)
1s22s22p63s2, 3p64s23d104p5
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p64s23d1
93.
What is the Law of Conservation of mass?
a)
Mass is created in a chemical reaction
b)
Mass is created in a physical change
c)
New chemicals formed from a chemical reaction have a larger overall mass than the original reactants
d)
Mass is never created or destroyed
94.
In a reaction A + B ----> C,  reactant A has 5g and product  C has 9g. How many grams does reactant B should have? 
a)
4g
b)
5g
c)
9g
d)
14g
95.
Matter can not be created nor destroyed: it can only be
a)
Destroyed a little bit
b)
Invisible
c)
Transformed, changed
d)
None of the above
96.
The Law of Conservation of matter states that the total amount of matter ______________ after it undergoes change.
a)
disappears
b)
stays the same
c)
weighs less
d)
explodes
97.
An oreo cookie weighs 20 grams.  It gets crushed into crumbs for a recipe.  How much do its crumbs weigh?
a)
15 grams
b)
25 grams
c)
20 grams
98.
Evidence of a chemical reactions is anything that shows - 
a)
a new substance has formed
b)
a solid dissolved in a liquid
c)
interaction between 2 gases
d)
a change in the state of matter
99.

When coal burns carbon dioxide is produced from the carbon in coal and the oxygen in air. Which of these is the best evidence that a chemical reaction occurs when coal burns?

a)

The shape of the coal changes

b)

Oxygen is present

c)

A new substance is produced

d)

Coal is made up of more than one element

100.

Which of the following describes a precipitate?

a)

a new liquid forms when a solid reactant is heated and melts

b)

a new solid product formed from two aqueous reactants

c)

a new gas forms when a solid is dissolved in a liquid

d)

bubbles form when two aqueous reactants are mixed

e)

a new solid forms when an aqueous reactant freezes

101.

All of the following are indicators of a chemical reaction except one. Which one is NOT an indicator that a chemical reaction has taken place?

a)

the production of heat or light

b)

a color change

c)

the production of gas bubbles

d)

the dissolving of one substance in another

e)

an odor change

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