Sign up for FREE

Chemistry FINAL EXAM 2026

Last updated about 4 hours ago

89 questions

Instructions

Unit 5 - Electron Arrangement

1

1

1

1

1

1

1

1

1

1

1

1

Unit 6 - Periodic Trends

1

1

1

1

1

1

1

1

1

1

1

1

1

1

Unit 7 - Bonding

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

5

1

1

1

Unit 7 part 2

Unit 8 - Reactions and Nomenclature

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

2

2

2

Unit 9 - Moles!

1

1

1

2

1

1

2

2

Extra Credit

2

Resources that will be very helpful for this test:
personalized naming compounds graphic organizer
calculator
These will be provided to you:
periodic table
electronegativity table
mole conversions graphic organizer
common ions table
solubility chart
Use your resources to your advantage!

Question 1

1.

Question 2

2.

Question 3

3.

Question 4

4.

Question 5

5.

Question 6

6.

Question 7

7.

Question 8

8.

Question 9

9.

Question 10

10.

Write the orbital diagram (1s↑↓) for an atom of nitrogen.

Question 11

11.

Write the electron configuration (1s2) for the Mg2+ ion.

Question 12

12.

Use the noble gas [ ] method to write the electron configuration for the calcium atom.

Question 13

13.

Question 14

14.

Question 15

15.

Question 16

16.

Question 17

17.

Question 18

18.

Question 19

19.

Question 20

20.

Question 21

21.

Question 22

22.

Question 23

23.

Question 24

24.

Question 25

25.

Question 26

26.

Question 27

27.

Question 28

28.

Question 29

29.

Question 30

30.

Question 31

31.

Question 32

32.

Question 33

33.

Question 34

34.

Question 35

35.

Question 36

36.

Question 37

37.

Question 38

38.

Question 39

39.

Question 40

40.

Question 41

41.

Question 42

42.

Question 43

43.

Question 44

44.

Draggable item		Corresponding Item

Question 45

45.

Question 46

46.

Question 47

47.

1

Question 48a

48a.

Draw a Lewis Dot structure for the following molecule. You must show all bonds and lone pairs (e- dots).

carbon dioxide, CO2

1

1

2

Question 49a

49a.

Draw a Lewis Dot structure for the following molecule. You must show all bonds and lone pairs (e- dots).

phosphorus trichloride, PCl3

1

1

Question 50

50.

Draggable item		Corresponding Item

Question 51

51.

Question 52

52.

Question 53

53.

Question 54

54.

Question 55

55.

Question 56

56.

Question 57

57.

Question 58

58.

Question 59

59.

Question 60

60.

Question 61

61.

Question 62

62.

Question 63

63.

Question 64

64.

Question 65

65.

1

1

Question 68

68.

Question 69

69.

Question 70

70.

Question 71

71.

1

1

Question 74

74.

Question 75

75.

Question 76

76.

Question 77

77.

Question 78

78.

Question 79

79.

Question 80

80.

Calculate the moles represented by 3.21x1024 atoms Se

Question 81

81.

How many particles are in 1.48 moles of Co?

Question 82

82.

Calculate the molar mass of NH3

Question 83

83.

Balance the chemical equation:
_______FeCl3(s) +  _______NaOH(s) → _______Fe(OH)3(s) + _______NaCl(s)

Question 84

84.

Balance the equation by adding coefficients.

Question 85

85.

EXTRA CREDIT

Reflect on your time in class this year. What were some of your fondest memories in chemistry?

IT WAS A PLEASURE BEING YOUR TEACHER THIS YEAR. THANKS FOR A GREAT YEAR!
HAVE A GREAT SUMMER!

A sodium cation is more chemically stable than a sodium atom.

True

False

A series of specific colors of light that can identify an element is referred to as its…

electromagnetic spectrum.

electromagnetic radiation.

radioactivity.

atomic emission spectrum.

A/an - - - is a specific amount of energy that an electron can absorb or emit.

energy level

orbital

quantum

valence shell

Which principle or law is stated here?
It is impossible to know the momentum and position of an electron in an atom simultaneously.

Law of Conservation of Mass

Law of Definite Proportions

Octet Rule

Heisenberg Uncertainty Principle

Which principle or law is stated here?
An atom will be chemically stable when it has eight electrons in its valence shell.

Heisenberg Uncertainty Principle

Octet Rule

Law of Conservation of Mass

Law of Definite Proportions

Which of the following will occur as an electron emits colored, visible light, as in the flame test lab?
Why is the fire important in the flame test lab?

The chemicals in the beakers are too cold to emit visible light.

The electrons in the chemicals must absorb energy before they can emit light.

All of these are correct.

The electrons in the chemicals must jump up to higher energy levels and fall back down to emit visible light.

In the quantum mechanical model of the atom, the location of any electron can best be pictured as…

a circle.

a series of concentric spheres.

an ellipse.

a cloud of probability called an orbital.

The orbitals with a dumbbell or infinity shape, such as those pictured here, are known as the _____ orbitals.

d

s

f

p

If an atom is currently obeying the octet rule, which statement is NOT true?

It has a very stable electron configuration.

It has the valence configuration of a noble gas.

It will lose electrons to become stable.

It has a full set of eight valence electrons.

When an atom of fluorine gains an electron and becomes an ion, its radius will increase.

True

False

Mendeleev is known as the father of the periodic table because he arranged the table by both atomic mass and chemical properties.

True

False

Helium is the element with the highest value of electronegativity on the periodic table.

True

False

Apply the rules for writing the symbols of elements to pick the one that would NOT be acceptable as the symbol for a new element.

R

Rp

RS

In the modern periodic table, elements are arranged by…

atomic number.

the order they were discovered.

atomic radius.

atomic mass.

Elements in the same family (vertical column on the PT) have…

their valence electrons in the same principal energy level.

a complete octet of electrons.

the same number of valence electrons.

the same number of protons.

Elements in the same period (horizontal row on the PT) have…

the same number of valence electrons.

their valence electrons in the same principal energy level.

a complete octet of electrons.

the same number of protons.

This value is a unique and identifying trait for each element.

quantum number

oxidation number

atomic number

mass number

The energy needed to remove an electron from an atom is...

ionization energy.

bond energy.

electron affinity.

electronegativity.

The change in energy as an atom gains an electron is...

electronegativity.

electron affinity.

bond energy.

ionization energy.

An atom's pull on electrons in a chemical bond is...

electron affinity.

ionization energy.

bond energy.

electronegativity.

Consider the alkali metals family.  Which trend occurs as the atomic number increases going down the column on the periodic table?

Electronegativities increase.

Ionization energies decrease.

Ionic radii decrease.

Atomic radii decrease.

Of the following groups of three, the elements whose chemical properties are most similar are those having atomic numbers…

5, 14, and 33.

5, 6, and 7.

16, 17, and 18.

9, 17, and 35.

Which of the following is FALSE for most atoms of elements that usually form ions with a charge of positive one (+1), such as Na+1?

Taking an electron from the element will be relatively easy.

The ion will have a smaller radius than the neutral atom.

The element is a nonmetal.

The element can be found in the first column of the Periodic Table.

If these charged objects could move on their own, what would they do?

They would get closer together to concentrate and strengthen the charge.

They would move closer together to try to neutralize the charge.

They would move far apart to dissipate and disperse the charge.

They would move far apart to try to neutralize the charge.

Which of the following statements is false concerning a beryllium ion, Be2+?

It is formed by adding 2 protons to a neutral atom.

It contains two more protons than electrons.

It is formed by removing electrons from a neutral atom.

It would be attracted to a chloride ion, Cl–.

The element fluorine forms the fluoride ion by…

gaining 1 electron.

gaining 1 proton.

losing 7 electrons.

losing 1 electron.

In most cases, the formation of a chemical bond involves only the valence electrons of the atoms involved.

True

False

Which type of bond utilizes a loosely held “sea” of electrons?

nonpolar covalent bond

ionic bond

metallic bond

polar covalent bond

An ion with a positive charge is called a/an...

anion

oxyanion

cation

polyatomic ion

When electrons are shared unevenly, what type of bond results?

polar covalent bond

nonpolar covalent bond

metallic bond

ionic bond

What kind of bond is shown in the picture?

polar covalent bond

metallic bond

nonpolar covalent bond

ionic bond

What type of bond is formed through the complete transfer of electrons between atoms?

polar covalent bond

metallic bond

ionic bond

nonpolar covalent bond

Chemical bonds...

join atoms together.

give reactive atoms stability.

lower the atoms' energy.

All of these are true.

Which of the following statements is false concerning NaCl, an ionic compound?

Its ions are arranged in a crystal lattice as a solid.

It conducts electricity as a solid, liquid, and aqueous solution.

It has a very high melting point.

It readily dissolves in water.

Which of the following statements is false concerning sugar, a molecular compound?

It has a low melting point.

Its atoms are bonded together with covalent bonds.

The solid form is not malleable or ductile.

It conducts electricity when dissolved in water.

Which bond has the greatest ionic character?

F—F

K—F

O—F

P—F

Due to the net energy change of breaking and forming bonds, many chemical reactions that occur release energy. These reactions are said to be...

mesothermic

endothermic

nonthermic

exothermic

A chemical bond in which two atoms share four electrons between them is called a _________ bond.

single bond.

double bond.

triple bond.

quadruple bond.

According to VSEPR theory, the electrostatic repulsion between electron pairs surrounding an atom causes…

positive ions to form.

an electron sea to form.

light to reflect.

these electron pairs to be separated as far as possible.

Which of the following would NOT lead to polarity in a molecule?

unequal sharing of electrons between the atoms in the molecule

large differences in the electronegativities of the atoms in the molecule

perfect symmetry in the shape of the molecule

unshared pairs of electrons on the central atom in the molecule

Match the molecule with the name of its geometry.

Trigonal Pyramidal

Linear

Bent or Angular

Trigonal Planar

Tetrahedral

Which molecule is nonpolar overall?

CH4

H2O

NH3

HCl

A molecule is a group of atoms held together by...

covalent bonds.

metallic bonds.

ionic bonds.

intermolecular forces.

Water molecules are polar because their shape is…

trigonal pyramidal

linear

trigonal planar

bent

Question 48b

48b.

Question 48c

48c.

Question 49b

49b.

Question 49c

49c.

Match the number to its prefix.

9

penta

5

hexa

6

hepta

7

nona

What is the name of the following compound: N2O4

dinitrogen tetraoxide

nitrogen(IV) oxide

nitrogen oxide

tetranitrogen dioxide

What is the purpose of a Roman numeral in the name of a compound?

to show how many different types of molecules a compound has

to show the number of oxygen atoms in a polyatomic ion

to show the charge of the metallic ion

to show which subscript to write for the metal in the chemical formula

Which is the correct formula for iron(III) phosphate?

Fe3P3

FePO4

FeP

Fe3(PO4)3

Below are formulas of ionic compounds made from hypothetical elements. Which formula is correct, assuming that each ion's charge is correct?

Q2+ +  E3— →  Q2E3

G+ +  R3— →  G2R

D2+ +  Z3—  →  D3Z2

A2+ +  X— →  AX3

Which one of the following compounds is least likely to form?

Al2S3

LiF

Na2Mg

BaO

The total positive and negative charges in the formula of an ionic compound add up to...

one

the mass number

zero

any whole number

Which principle or law is stated here?
Atoms are neither created nor destroyed during a chemical reaction.

Heisenberg Uncertainty Principle

Law of Definite Proportions

Law of Conservation of Mass

Octet Rule

Elements that are found on the same side of the periodic table "staircase" will form ionic bonds together.

True

False

When a reduction-oxidation (redox) reaction occurs, the charge of at least one element will change before and after the reaction.

True

False

A decomposition reaction will always result in the formation of one single product.

True

False

The formula for an acid is easy to recognize because the first element is always hydrogen.

True

False

Which of the following is NOT balanced?

HCl + KOH → KCl +H2O

2 Mg + O2 → 2 MgO

2 Na + 2 H2O → 2 NaOH + H2

2 AgNO3+ Cu → Cu(NO3)2 + Ag

The balancing of a chemical equation is accomplished by...

changing the subscripts of the formulas.

eliminating some of the product or reactant formulas.

changing the coefficients in front of the formulas.

changing the formulas of the reactants and products.

What is the name of HCl(aq)?

hydrochloric acid

chloric acid

hydrogen monochloride

hydrogen chloride

The reaction     2 KClO3 → 2 KCl + 3 O2   would be classified as...

single replacement

decomposition

double replacement

synthesis

Question 66

66.

Question 67

67.

The reaction  Ca + MgSO4 → CaSO4 + Mg   would be classified as...

synthesis

double replacement

decomposition

single replacement

In order for a combustion reaction to occur, _____________ must be available as a reactant.

H2

H2O

O2

CO2

A solid that forms when liquid solutions react is called a/an...

coefficient.

aqueous solution.

subscript.

precipitate.

A/an _____________ forms when a substance is dissolved in water.

aqueous solution

precipitate

gas

solid

Question 72

72.

Question 73

73.

Consider the two reactants below:

NaOH + Cu(SO4)2 → ________ + ________

Which of the following are the products of this reaction?  

Cu(OH)2

NaCu

SO4(OH)

Na2SO4 

CuOH

Na(SO4)2

NaSO4

Categorize the following substances as soluble or insoluble in water.

Pb(NO3)2

MgCO3

CaSO4

K3PO4

Soluble

Insoluble

Determine whether the following substances form a solid or dissolve in water to form a solution.

ammonium phosphate

barium sulfate

silver (I) bromide

calcium nitrate

Forms solid

Dissolves in water

Multiply a mole quantity by Avogadro’s number when you want to find the number of…

moles.

grams.

particles.

liters.

Which is the correct label for molar mass?

moles

grams/mole

grams

moles/gram

What is the correct molar mass of Ba(OH)2?

308 g/mol

154 g/mol

58 g/mol

171 g/mol

What shape does a carbon dioxide molecule take?

tetrahedral

bent

linear

trigonal pyramidal

trigonal planar

Is a carbon dioxide molecule polar or nonpolar?

polar

nonpolar

What shape does a phosphorus trichloride molecule take?

bent

trigonal pyramidal

trigonal planar

linear

tetrahedral

Is a phosphorus trichloride molecule polar or nonpolar?

polar

nonpolar

Which chemical reaction would occur naturally if the chemicals were combined?

Cu + FeCl3 

Zn + FeCl3

In an activity series of metals, where are the metals that are safer to touch and wear as jewelry?

at the top of the list

in the middle of the list

at the bottom of the list

Consider the reactants in the reaction in the photograph:

lead(II) nitrate + potassium iodide → ________ + ________

What are names of the products in this reaction?

Nitrate iodide

Lead(II) iodide

Potassium nitrate

Nitrate potassium

Lead(II) potassium

What is the yellow substance?

A liquid

A precipitate

A gas

A reactant