Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Chem Exam

Total questions: 104

Worksheet time: 1hrs 17mins

Name
Class
Date
1.

​ (a)   is a loss of electrons, which means the element becomes more ​ (b)   . ​ (c)   is a gain of electrons which means the element becomes more ​ (d)  

Choose from the below words
oxidation
positive
reduction
negative
2.

Given the following reaction in acid, what is the coefficient of water in the balanced equation? Fe+2 + Cr2O72- --> Fe3+ + Cr3+

a)

1

b)

3

c)

5

d)

7

e)

none of these

3.

Match the following elements an their oxidation numbers

a)

O2

1.

zero

b)

N in NH3

2.

-3

c)

K in KMnO4

3.

+1

d)

H in H2O

4.

+1

e)

Cl in KClO4

5.

+7

4.

How many electrons are transferred in the following reaction (acid)?

Cd + 2HCl --> CdCl2 + H2

a)

0

b)

1

c)

2

d)

4

e)

none of these

5.

Reorder the following steps in balancing a redox reaction in an acidic solution.

a)

Write the half reactions

b)

Balance all elements that are not O or H

c)

Balance O with H2O and H with H+

d)

Determine electrons and balance charge

e)

Combine equations and cancel like terms

1)
2)
3)
4)
5)
6.

To find an oxidizing agent, you need to check the oxidation number of an atom that is before and after the chemical reaction. If the oxidation number is ​ (a)   in the product, then it has ​ (b)   electrons, and the substance went through ​ (c)   . If the oxidation number is ​ (d)   , then it has ​ (e)   electrons and was reduced.

Choose from the below words
more positive
lost
oxidization
more negative
gained
7.

Match the following

a)

oxidation

1.

loss of electrons

b)

reduction

2.

gain of electrons

c)

reducing agent

3.

element that is oxidized

d)

oxidizing agent

4.

element that is reduced

e)

Noodles

5.

The best golden retriever on the planet

8.

Which of the following will have similar properties?

a)

O, S, Se

b)

O, F, Ne

c)

N, Ne, Na

d)

H, K, P

9.
Each column in the periodic table is called a _________ .
a)
period
b)
group
c)
cluster
d)
unit
10.
Periods on the periodic table are __________.
a)
Horizontal Rows
b)
Vertical Columns
11.
Groups on the periodic table are __________.
a)
Horizontal Rows
b)
Vertical Columns
12.

How many periods are on the periodic table?

a)

5

b)

6

c)

7

d)

8

13.
Which is an alkali metal?
a)
Magnesium
b)
Iron
c)
Sodium
d)
Europium
14.
Which is a halogen?
a)
Helium
b)
Chlorine
c)
Oxygen
d)
Neptune
15.

The blue elements (left side) are called 

a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
16.

The yellow elements (right side) are called 

a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
17.

What do the periods (rows) represent?

a)

an additional energy level

b)

an additional proton

c)

an additional group

d)

an additional electron

18.

Match the following

a)

lithium

1.

2 energy levels

b)

helium

2.

1 energy level

c)

aluminum

3.

3 energy levels

d)

bromine

4.

4 energy levels

e)

strontium

5.

5 energy levels

19.

In the equation shown, what are the reactant(s)?

a)

N2 + H2

b)

NH3

20.

In the equation shown, what are the product(s)?

a)

N2 + H2

b)

NH3

21.

Is this equation balanced?

a)

Yes

b)

No

22.

Is this equation balanced?

a)

Yes

b)

No

23.

To balance an equation you should:

a)

ONLY change subscripts.

b)

ONLY change coefficients.

c)

Change BOTH subscripts and coefficients.

24.
Alpha particles.....
a)
a) are positively charged.
b)
b) consist of two protons and four neutrons.
c)
c) can penetrate any thickness of matter
d)
d) All of the above 
25.
The most penetrating type of radiation is the ____.  
a)
alpha particle
b)
gamma ray
c)
beta particle
d)
uranium
26.
Negatively charged particles emitted from a nucleus at a high speed are ____.  
a)
alpha particle
b)
gamma rays
c)
beta particles
d)
X rays
27.
The three types of nuclear radiation in increasing order of penetrating power are ____.  
a)
  alpha, beta, gamma 
b)
X ray, beta, gamma
c)
alpha, gamma, beta 
d)
X ray, gamma, beta 
28.

What type of radioactive decay is shown here? Notice it is emitting an electron.

a)

Alpha decay

b)

Beta decay

c)

Gamma decay

29.
What type of radiation can be stopped by clothing or a piece of paper?
a)
Alpha radiation
b)
Beta radiation
c)
gamma radiation
30.
The rate at which a radioactive element decays is its ____.
a)
quarter life
b)
whole life
c)
wonderful life 
d)
half life
31.

The amount of material left after TWO half lives is ____ of the original amount.

a)

1/2 or 50%

b)

1/4 or 25%

c)

1/8 or 12.5%

d)

1/16 or 6.25%

32.

A radioactive element has a half life of 100yrs, how long would it take for a 200g sample to become 100 grams?

a)

200yrs

b)

100yrs

c)

50yrs

d)

300yrs

33.

Barium-122 has a half-life of 2 minutes. A fresh sample weighing 80 g was obtained. How much barium-122 will be left after 10 minutes?

a)

0.25g

b)

2.5g

c)

25g

d)

80g

34.
When nuclei decay, massive amounts of __________ is released.
a)
energy
b)
jello
c)
protons
d)
neutrons
35.

the term used to date rocks and fossils

a)

nuclear dating

b)

fission decay

c)

radioactive dating

d)

radioactive fossil finding

36.

Iodine-131 has a half life of 8 days and decays into Xenon-131. Which one is the parent isotope?

a)

Iodine-131

b)

Xenon-131

c)

cannot be determined

37.

Name this molecule:

a)

methane

b)

ethane

c)

propane

d)

butane

38.

Name this molecule:

a)

methane

b)

ethane

c)

propane

d)

butane

39.

Name this molecule:

a)

methane

b)

ethane

c)

propane

d)

butane

40.

What is the correct name for the alkyne shown?

a)

butyne

b)

1-butyne

c)

2-butyne

d)

1-methyl-1-propyne

41.
Which of the following compounds is an example of hydrocarbon?
a)
CO2
b)
C2H6
c)
C2H5OH
d)
CH3COOH
42.

Which is the structures with IUPAC nomenclature


2,2,4-trimethylpentane

a)
b)
c)
d)
43.

What is the name of this hydrocarbon?

a)

1 - butane

b)

1 - butene

c)

2 - butane

d)

2 - butene

44.

How many Strontium atoms are in the compound?

a)

6

b)

2

c)

3

d)

5

45.

How many atoms of oxygen are in the compound?

a)

3

b)

4

c)

1

d)

12

46.

How many Phosphorous atoms are in the molecule?

a)

2

b)

4

c)

1

d)

8

47.

How many electrons can the first energy level (s level) hold?

a)
1
b)
2
c)
8
d)
0
48.
What atom matches this electron configuration?
1s22s22p63s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
49.
Which electron configuration belongs to Chlorine (Cl)?
a)
1s2 2s2 2p6 3s2 3p5
b)
1s2 2s2 2p6 3s2 3p6
c)
1s2 2s2 2p6 3s2 3p7
50.

What atom matches this electron configuration? 1s22s22p63s23p64s23d8

a)
Zinc
b)
Copper
c)
Nickel
d)
Germanium
51.

The 4 orbitals are

a)

s, p, d, f

b)

a, b, c, d

c)

2, 4, 6, 8

52.
How many electrons can the d sublevel hold?
a)
8
b)
10
c)
2
d)
4
53.

What do you start all electron configurations with?

a)

1s2

b)

1d10

c)

1f14

d)

1p6

54.

What atom matches this electron configuration? [Xe] 6s2

a)
Mercury
b)

Barium

c)
Platinum
d)
Thallium
55.
What is the shorthand electron configuration for Sulfur atom?
a)
[Ar] 3p4
b)
[He] 3s23p4
c)
[Ne] 3s23p4
d)
[Na] 3s23p3
56.

How many electrons can the f sublevel hold?

a)
8
b)
10
c)
2
d)

14

57.

What atom matches this electron configuration? 1s22s22p63s23p1

a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
58.

Which of the following is the correct abbreviated noble gas electron configuration for chlorine?

a)
[Ne]3s23p5
b)
[He]2s22p63s23p5
c)
[Mg]3p5
d)
[Ne]1s22s22p63s23p5
59.

What is the charge of an atom that has gained one electron?

a)
-1
b)
-2
c)
+1
d)
+2
60.

Which is the correct molecular structure for carbon dioxide?

a)
b)
c)
d)
61.

How many total valence electrons are participating in bonding in the molecule above?

a)

8

b)

4

c)

2

d)

3

62.
Which of the following is the correct Lewis dot structure for the molecule fluorine (F2)?
a)
A
b)
B
c)
C
d)
D
63.

NH3 has how many lone pairs?

a)

0

b)

1

c)

2

d)

3

64.

CCl4 has how many double bonds?

a)

0

b)

1

c)

2

d)

3

65.

Carbonate (CO32-) has how many double bonds?

a)

0

b)

1

c)

2

d)

3

66.

CH2O has which of the following?

a)

Multiple double bonds

b)

Multiple single bonds

c)

One double bond

d)

One single bond

e)

A lone pair

67.

True or False: Shorter bonds are stronger bonds with larger bond energy.

a)

True

b)

False

68.

True or False: Double and triple bonds are longer, weaker bonds than single bonds.

a)

True

b)

False

69.

Which of these would require the least energy in order to break the bonds?

a)

single bond

b)

double bond

c)

triple bond

70.

Longer bonds are _ than shorter bonds

a)

weaker

b)

stronger

71.

When the bond is stronger, the bond energy is

a)

smaller

b)

larger

72.

True or False: Energy is required to break a bond and energy is released when new bond(s) form.

a)

True

b)

False

73.
 A lone pair is defined as
a)
A pair of bonding electrons
b)
One non-bonding electron
c)
A pair of non-bonding electrons
d)
A pair of electrons on the central atom
74.
What is the VSEPR theory used to predict?
a)
Bond Strength
b)
Polarity
c)
Molecular Shape
d)
Electronegativity
75.

What is the name of this VSEPR structure

a)

tetrahedral

b)

trigonal planar

c)

bent

d)

linear

76.

What is the name of this VSEPR shape?

a)

trigonal planar

b)

bent

c)

tetrahedral

d)

trigonal pyramidal

77.

Who is the name of this VSEPR shape?

a)

trigonal planar

b)

tetrahedral

c)

bent

d)

trigonal pyramidal

78.

What is the name of this VSEPR shape? (The dark shapes are lone electron pairs)

a)

trigonal planar

b)

tetrahedral

c)

bent

d)

linear

79.

What is the name of this VSEPR shape? (The dark shapes are lone electron pairs)

a)

trigonal planar

b)

bent

c)

trigonal pyramidal

d)

tetrahedral

80.

How many unshared pairs of electrons will a trigonal pyramidal molecule have? 

a)
1
b)
2
c)
3
d)
4
81.
Choose the correct shape for this molecule:
a)
Trigonal planar
b)
Trigonal pyramidal
c)
Tetrahedral
d)
Linear
82.

Which of the following images represents a Trigonal Planar molecular geometry?

a)
b)
c)
d)
83.
Why do ionic bonds form?
a)
so the number of protons equals the number of electrons
b)
to fill the outermost energy level
c)
so an atom can become unstable
84.
An electron has what kind of charge?
a)
no charge
b)
positive 
c)
negative
d)
it depends
85.
An atom that has gained or lost electrons is called ...
a)
a winner
b)
an isotope
c)
an ion
d)
a loser
86.
Atoms that gain electrons become...
a)
negatively charged
b)
positively charged
c)
remain neutrally charged
d)
21
87.
If an aluminum atom has 13 protons (+) and 10 electrons (-), what is it's charge?
a)
Al3+
b)
Al13+
c)
Al10+
d)
Al10-
88.
The attraction between oppositely charged ions is called a(n) _______________.
a)
ionic bond
b)
polyatomic ion
89.
What type of elements will form an ionic bond?
a)
Metals + Metals
b)
Nonmetals + Nonmetals
c)
Metals + Nonmetals
d)
None of the above
90.
What is the name given to the outermost electron(s)?
a)
outside electrons
b)
plutonian electrons
c)
ionic electrons
d)
valance electrons
91.
Ionic bonds form because
a)
Two ions of the same charge are attracted to each other
b)
Two ions of different charges are attracted to each other
c)
Two atoms share their electrons
d)
Two or more atoms share protons
92.

Label the following parts of a chemical formula.

a)superscript
b)coefficient
c)subscript
d)element
1
2
3
1)
2)
3)
93.

Which of the following describes covalent bonds?

a)

Bonds form because of opposite charges

b)

electrons are shared to fill outer electron shells

c)

Electrons are transferred between atoms

d)

Covalent bonds are magical

94.

Which of the following atoms is most likely to bond with another atom?

a)
b)
c)
d)
95.
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
96.
The atom with the largest atomic radius in Period 4 (row 4) is - 
a)
K
b)
Kr
c)
Fe
d)
Fe
97.
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
98.
The element with the smallest ionization energy in Period 6 is - 
a)
Rn
b)
Cs
c)
Os
d)
Tm
99.
As you move across the periodic table atoms tend to get smaller because, ______________.
a)
the atoms have more mass.
b)
the atoms have less mass
c)
the atoms have more protons.
d)
the atoms have less electrons.
100.
The energy required to remove electrons is the definition of: 
a)
Electronegativity
b)
Atomic Number
c)
Atomic Radius
d)
Ionization
101.
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. 
102.
Which has the greater Electronegativity: 
N or C?
a)
C
b)
N
103.
Electronegativity __________ from left to right within a period and __________ from top to bottom within a group.
a)
decreases, increases 
b)
increases, increases
c)
increases, decreases 
d)
stays the same, increases
104.

Air has an average molar mass of 29.0 g/mol.  The density of air at 0.99 atm and 30.0degC is:

a)

29.0 g/L

b)

39.8 g/mL

c)

1.15 g/L

d)

1.37g/mL

Similar Resources on Wayground

ICP Chemistry Semester Review

100 questions

ICP Chemistry Semester Review

quiz

Worksheet

•

9th - 12th Grade

Review for Final Exam

100 questions

Review for Final Exam

quiz

Worksheet

•

8th - 9th Grade

Chromosome, Mitosis, & Meiosis Review

102 questions

Chromosome, Mitosis, & Meiosis Review

quiz

Worksheet

•

9th Grade

Biodiversity Unit Review

102 questions

Biodiversity Unit Review

quiz

Worksheet

•

9th Grade

Unit 8 Test REVIEW

100 questions

Unit 8 Test REVIEW

quiz

Worksheet

•

9th Grade

E.S.S. 2 FINAL EXAM Practice

100 questions

E.S.S. 2 FINAL EXAM Practice

quiz

Worksheet

•

9th Grade

Unit 3 Test Review (2023-2024)

100 questions

Unit 3 Test Review (2023-2024)

quiz

Worksheet

•

9th Grade

Unit 6 Review - Waves

100 questions

Unit 6 Review - Waves

quiz

Worksheet

•

7th - 10th Grade