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Worksheets

Chemistry Spring Final 2020

Total questions: 86

Worksheet time: 2hrs 5mins

Name
Class
Date
1.

A bright-line spectrum of an atom is caused by the energy released when electrons

a)

jump to a higher energy level

b)

jump to a lower energy level

c)

absorb energy and jump to a higher energy level

d)

absorb energy and jump to a lower energy level

2.

The part of the atom where the electrons will NOT be found is in the

a)

area surrounding the nucleus

b)

nucleus

c)

electron cloud

d)

orbitals

3.

The major difference between a 1s orbital and a 2s orbital is that

a)

the 2s orbital can hold more electrons

b)

the 2s orbital has a slightly different shape

c)

the 2s orbital is at a higher energy level

d)

the 1s orbital can have only one electron

4.

What is the total number of electrons needed to fill the fourth main energy level?

a)

4

b)

8

c)

16

d)

32

5.

From the following elements, select the element in which two of the 3p ORBITALS are completely filled.

a)

silicon (atomic number 14)

b)

phosphorous (atomic number 15)

c)

sulfur (atomic number 16)

d)

chlorine (atomic number 17)

6.

If electromagnetic radiation A has a lower frequency than radiation B, then that would mean the wavelength of A is ____than the wavelength of B.

a)

Longer

b)

Shorter

c)

equal

d)

exactly have the size of B.

7.

For an electron in an atom to change from ground state to an excited state

a)

energy must be released

b)

energy must be absorbed

c)

radiation must be emitted

d)

transitions from higher to lower energy levels must occur

8.

A three-dimensional region around a nucleus in which an electron may be found is called a(n)

a)

spectral line

b)

electron path

c)

orbital

d)

orbit

9.

What orbital will never exist

a)

3d

b)

8s

c)

6d

d)

3f

10.

For the d sublevel, the number of orbitals is

a)

5

b)

9

c)

16

d)

18

11.

The energy level that is filled with 8 electrons is the

a)

1st energy level

b)

2nd energy level

c)

3rd energy level

d)

4th energy level

12.

The farther an electron is from the nucleus, the more ___ it has

a)

charge

b)

energy

c)

mass

d)

size

13.

The total number of electrons in the outer shell of a sodium atom is

a)

1

b)

2

c)

8

d)

18

14.

The maximum number of electrons that can occupy the 2nd shell of an atom of magnesium is

a)

1

b)

2

c)

8

d)

18

15.

What is the correct electron arrangement for sulfur? (Think about electron shells/energy levels!)

a)

2-8-6

b)

2-8-8

c)

4-6-2

d)

2-8-4

16.

The chemical bond formed when two atoms SHARE electrons is called a(n)

a)

covalent bond

b)

ionic bond

c)

metallic bond

d)

electron bond

17.

Which pair of atoms will combine with each other and form an ionic bond?

a)

C and O

b)

C and H

c)

Ca and Mg

d)

Ca and Br

18.

Which element is most likely to GAIN electrons in a chemical reaction?

a)

Kr

b)

K

c)

Br

d)

Ca

19.

What is the oxidation number (charge) of oxygen in most compounds?

a)

6

b)

-2

c)

8

d)

0

20.

Which formula represents a substance that contains COVALENT bonds?

a)

LiCl

b)

CaCl2

c)

K2O

d)

CO2

21.

How does an atom of aluminum become an ion?

a)

it gains 3 electrons

b)

it gains 3 protons

c)

it loses 3 electrons

d)

it loses 3 neutrons

22.

How many electrons are shared within a single bond?

a)

0

b)

1

c)

2

d)

4

23.

Which atoms are MOST LIKELY to form covalent bonds?

a)

metal atoms that share electrons

b)

metal atoms that share protons

c)

nonmetal atoms that share electrons

d)

nonmetal atoms that share protons

24.

The electrons that are lost, gained, or shared in chemical bonds are called _____

a)

valence electrons

b)

chemical electrons

c)

Lewis electrons

d)

none of the above

25.

Which of the following is the correct name for a compound between Magnesium and Sulfur?

a)

Magnesium sulfur

b)

Magnesium sulfide

c)

Magnesium (II) sulfide

d)

Dimagnesium disulfide

26.

Name the acid with the formula HNO3

a)

Nitrous Acid

b)

Nitric Acid

c)

Hydonitrous acid

d)

Acid Trioxide

27.

Which of the following is an acid

a)

ZnCl2

b)

CCl4

c)

HCl

d)

NaCl

28.

What is the oxidation number of magnesium in THIS molecule of MgO?

a)

-1

b)

0

c)

+1

d)

+2

29.

What is the oxidation number of sulfur in THIS molecule of SO2?

a)

0

b)

+1

c)

+2

d)

+4

30.

Which atom is most likely to form a 3+ ion?

a)

Li

b)

Sr

c)

Kr

d)

Fe

e)

P

31.

Calcium reacts with fluorine to form an ionic solid. The correct formula for this solid is

a)

CaF2

b)

CF2

c)

CaF

d)

Ca2F

32.

What is the correct formula for chromium (III) when bonded to a sulfate ion

a)

Cr3(SO4)2

b)

Cr2(SO4)3

c)

Cr(SO4)2

d)

Cr2SO4

33.

How many atoms of silver do you need to bond with a nitrate ion?

a)

1

b)

2

c)

3

d)

4

34.

How many nitrogen atoms do you need to bond with three lithium atoms?

a)

1

b)

2

c)

3

d)

4

35.

Electron transfer is another name for

a)

ionic bonding

b)

electron sharing

c)

covalent bonding

d)

valence electrons

36.

If three electrons were removed from a sodium atom, the new particle would be represented as

a)

Na+

b)

Na2+

c)

Na3+

d)

Na4+

37.

In order for the reaction 2Al + 6HCl --> 2AlCl3 + 3H2 to occur, which of the following must be true

a)

Al must be above Cl on the activity series

b)

Al must be above H on the activity series

c)

Heat must be supplied for the reaction

d)

A precipitate must be formed

38.

The type of reaction that takes place when one element reacts with a compound to form a new compound an different element is a ___

a)

combination reaction

b)

decomposition reaction

c)

single-replacement reaction

d)

double-replacement reaction

39.

A decomposition chemical reaction can be compared to

a)

two dancing couple switching partners

b)

eight couples doing a square dance

c)

a dancing couple breaking up

d)

two single people joining for dance

40.

The reaction 2KClO3 --> 2KCl + 3O2 is a(n)

a)

synthesis reaction

b)

decomposition reaction

c)

combustion reaction

d)

Double replacement reaction

41.

Which of the following type of chemical reaction results in a single (1) product

a)

combination/synthesis reaction

b)

decomposition reaction

c)

single replacement reaction

d)

double replacement reaction

42.

What are the correct coefficients when this equation is balanced K + Br2 --> KBr

a)

1,1,1

b)

1,2,1

c)

2,1,2

d)

2,1,1

43.

What are the correct coefficients when this chemical equation is balanced? P4 + O2 --> P2O5

a)

4,2,7

b)

2,5,4

c)

1,1,1

d)

1,5,2

44.

What are the coefficients needed to balance the chemical equation below?

Al + FeO --> Fe + Al2O3

a)

2,3,3,1

b)

3,3,3,1

c)

2,1,1,1

d)

1,2,1,2

45.
a substance that is formed as the result of a chemical reaction
a)
Product 
b)
Reactant
c)
Starters
d)
Enders
46.
the starting materials in a chemical reaction
a)
Products
b)
Reactants
c)
Starters
d)
Enders
47.

The law of conservation of mass can be demonstrated by a chemical reaction. Which of the following models of a chemical reaction best represents the law of conservation of mass?

a)
b)
c)
d)
48.
2 NaBr + 1 Ca(OH)2 ----> 1 CaBr2 + 2 NaOH
a)
Synthesis (or combination)
b)
Decomposition
c)
Single displacement
d)
Double displacement
49.
2 NH3+ 1 H2SO4 ----> 1 (NH4)2SO4
a)
Synthesis (or combination)
b)
Decomposition
c)
Single displacement
d)
Double displacement
50.
3 Pb + 2 H3PO4 ----> 3 H2 + 1 Pb3(PO4)2
a)
Synthesis (or combination)
b)
Decomposition
c)
Single displacement
d)
Double displacement
51.
1 Li3N + 3 NH4NO3 ----> 3 LiNO3 + 1 (NH4)3N
a)
Synthesis (or combination)
b)
Decomposition
c)
Single displacement
d)
Double displacement
52.

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

53.

Predict the products of this synthesis reaction: H2 + Cl2 →

a)

HCl

b)

H2Cl2

c)

H2Cl

d)

HCl2

54.

Predict the products for the this Single Replacement reaction:

K + HCl →

a)

KCl + H2

b)

KHCl

c)

KH + Cl2

d)

HCl + K2

55.

Predict the products for the this Double Replacement reaction:

AgNO3 + KCl →

a)

AgCl + KNO3

b)

AgK + ClNO3

c)

KAg + NO3Cl

d)

AgCl + 3 KNO

56.

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

57.

Predict the product of this synthesis reaction:

Al + S₈ →

a)

AlS

b)

AlS8

c)

Al2S

d)

Al2S3

58.

Predict the products for the decomposition of aluminum oxide, Al2O3 →

a)

Al + O2

b)

O + Al2

c)

Al2 + O3

d)

Al + O

59.

Predict the products of this single replacement reaction: Na + H2O →

a)

NaO + H2

b)

NaOH + H2

c)

NaH + O2

d)

ONaH

60.
What electron configuration matches an oxygen atom?
a)
1s22s22p63s2, 3p64s23d104p5
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p64s23d1
61.
What is the electron configuration of Sulfur  using noble gas method
a)
[Ne]3s1
b)
[Ne]3s23p3
c)
[Ne]3s23p4
62.

What atom matches this electron configuration?

[Xe] 6s24f145d9

a)

Mercury

b)

Gold

c)

Platinum

d)

Thallium

63.
Which element is pictured?
a)
neon
b)
fluorine
c)
magnesium
d)
argon
64.
Electron arrangement that uses arrows
a)
Electron configuration
b)
Shorthand configuration
c)
Lewis dot structure
d)
Orbital diagram
65.

What is the oxidation number of Fe in FeCl3?

a)

-3

b)

-2

c)

+2

d)

+3

66.

What is the oxidation number of Cl in FeCl3?

a)

-3

b)

-1

c)

+1

d)

+3

67.

What is the oxidation number of Cl in ClO3- ?

a)

-1

b)

+1

c)

+5

d)

+6

68.

What is the oxidation state of S in SO42-?

a)

+2

b)

+4

c)

+6

d)

+8

69.
According to the octet rule most elements need _______ valence electrons.
a)
2
b)
8
c)
6
d)
18
70.
Hydrogen needs _____ electrons in its valence shell to be stable.
a)
4
b)
6
c)
8
d)
2
71.
Which of the following is the correct Lewis dot structure for the molecule fluorine (F2)?
a)
A
b)
B
c)
C
d)
D
72.
How many electrons can be used in the Lewis Structure for : NO3 -
a)
23
b)
20
c)
18
d)
24
73.
What is the correct structure for BF3?
a)
Option A.
b)
Option B. 
c)
Option C.
d)
Option D.
74.
How many valence electrons are available for bonding in the sulfate ion (SO4-2)?
a)
30 electrons
b)
32 electrons
c)
28 electrons
d)
impossible to tell
75.
What is this element? 
1s22s22p63s23p6
4s23d104p6
a)
Argon
b)
Krypton
c)
Selenium
d)
Bromide
76.

What is the correct Lewis Dot Structure for ammonia NH3

a)
b)
c)
d)
77.

Which is the correct molecular structure for carbon dioxide?

a)
b)
c)
d)
78.

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

a)

8

b)

4

c)

2

d)

3

79.

CCl4 has how many double bonds?

a)

0

b)

1

c)

2

d)

3

80.

represented by the symbol h; equal to 6.626 × 10^-34 J•s, where J is the symbol for the joule

a)

de Broglie equation

b)

planck's constant

c)

electron-dot structure

d)

Heisenberg uncertainty principle

81.

The frequency of violet light is 7.5x1014 Hz. What is its wavelength?

a)

4.0x10-7 m

b)

4.0x107 m

c)

2.25x1023m

d)

2.25x1023 Hz

82.

Red light has a wavelength of 675 x 10-9 m. What is its frequency?

a)

2.03x1011 m

b)

4.44x1014 Hz

c)

4.44x1014 nm

d)

2.03x1011 Hz

83.

What is the speed of light?

a)

3.0x108 ms

b)

3.0x108 m/s

c)

6.626x10-34 Js

d)

6.626x10-34 J/s

84.

What is Planck's Constant?

a)

6.63x10-34 Js

b)

6.63x10-34 J/s

c)

3.0x108 ms

d)

3.0x108 m/s

85.
High frequency waves have _________ wavelength.
a)
varying
b)
high
c)
the same
d)
low
86.

If a photon has frequency = 2.00 x 1014 Hz and the speed of light = 3.00 x 108 m/s, then what is its wavelength?

a)

1.5 nm

b)

1500 m

c)

1500 nm

d)

6.00 x 1022 m