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2022 Chemistry Final Exam Reg

Total questions: 103

Worksheet time: 2hrs 58mins

Name
Class
Date
1.

Which substance represents an ionic compound?

a)

H2O2 (hydrogen peroxide)

b)

NaCl (salt)

c)

H2O (water)

d)

CO (carbon moxide)

2.

The difference between a compound and a mixture.

a)

A compound can be separated into elements

b)

A compound can be separated into impure substances

c)

A mixture can not be separated

d)

A mixture can be physically separated

3.

Which of the elements in the periodic table above should have the smallest atomic radius?

a)

Potassium (K)

b)

Scandium (Sc)

c)

Rubidium (Rb)

d)

Cesium (Cs)

4.

What are the rules for writing the abbreviation for an element?

a)

The first and second letter are both capitalizes

b)

The first letter is always capitalized

c)

The second letter is always lower case

d)

There isn't a rule, you just look at the periodic table

5.

How many atoms of Sulfur are in the following compound:

Al2(SO4)3

a)

12

b)

4

c)

3

d)

1

6.

Which one identifies an atom and the correct number of valence electrons?

a)

Magnesium (Mg) - 1 valence electron

b)

Nitrogen (N)- 4 valence electrons

c)

Chlorine (Cl)- 7 valence electrons

d)

Iodine (I)- 8 valence electrons

7.

In the element Nitrogen, how many electrons are available for bonding?

a)

2

b)

3

c)

4

d)

5

8.

Which statements are true of the nucleus of an atom?

a)

It contains all the subatomic particles

b)

It contains protons and neutrons

c)

It contains almost all the mass

d)

It has a positive charge

e)

It has a negative charge

9.

Mark all that are true about electrons

a)

They have a negative charge

b)

They orbit the nuclues

c)

They are involved in bonding

d)

They have a positive charge

e)

They make up the mass of an atom

10.

Which group of the periodic table are noble gases found?

a)

Group 1

b)

Group 10

c)

Group 12

d)

Group 18

11.

Which of the following is not organized in a column in the periodic table?

Which is not a group or family?

a)

Noble gases

b)

Alkali metals

c)

Metalloids

d)

Halogens

12.

What are the physical properties of a metal?

Mark all that apply

a)

They are shiny

b)

They conduct electricity

c)

They react with acids

d)

They are brittle

e)

They are dull

13.
An unknown substance has the following properties: luster, brittle, a nonconductor of electricity, and high density.  How would it be classified?
a)
Metal
b)
Nonmetal
c)
Metalloid
14.
How would this element be classified?
a)
Metal
b)
Nonmetal
c)
Metalloid
d)
Metamorphic
15.
__________ heat causes a gas to condense to a liquid.
a)
Increasing
b)
Decreasing
16.
In the gas phase, molecules are __________ than in the solid phase.
a)
closer together
b)
farther apart
17.
Molecules have the least kinetic energy in which phase?
a)
solid
b)
liquid
c)
gas
d)
plasma
18.

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

19.

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

20.

Examine the chemical equation. Check the box(es) below of the particular indicator(s) present in the equation.


AgNO3 (aq) + NaCl (aq) --> AgCl (s) + NaNO3 (aq)

a)

formation of water

b)

formation of a gas

c)

formation of a precipitate

d)

color change

e)

energy change

21.

Examine the chemical equation. Check the box(es) below of the particular indicator(s) present in the equation.


Na2CO3 (s) + HCl (aq) --> H2O (g) + NaCl (aq) + CO2 (g)

a)

formation of water

b)

formation of a gas

c)

formation of a precipitate

d)

color change

22.

Four students performed four different investigations by combining different substances. Which of the observations is most indicative of a chemical reaction?

a)

investigation 1

b)

investigation 2

c)

investigation 3

d)

investigation 4

23.

An aqueous, cloudy, white baking soda solution was combined with solid, powdery, white calcium chloride. Once combined, the temperature of the test tube increased and bubbling occurred creating an aqueous, cloudy, white solution with a flaky, white solid. What indicators of a chemical change are present?

a)

energy change

b)

Color change

c)

gas bubbling

d)

precipitate formation

24.
What is the name of CuCl2
a)
copper (II) chloride
b)
copper chloride
c)
copper monochloride
d)
copper (I) chloride
25.
Name the compound S2F8
a)
sulfur (II) fluoride
b)
disulfur octafluoride
c)
sulfur fluorine
d)
sulfur octafluoride
26.

What is Ca3N2 called?

a)

calcium nitride

b)

calcium (II) nitride

c)

calcium nitrogen

d)

tricalcium dinitride

27.
Give the name for the polyatomic ion PO43- 
a)
phosphorous tetraoxide
b)
phosphorous oxide
c)
phosphorous (III) oxygen
d)
phosphate
28.
Write the name for Mn(CO3)2 
a)
manganese (IV) carbonate
b)
manganese (II) carbonide
c)
manganese dicarbonate
d)
manganese carbonate
29.

The chemical bond between a non-metal and another non-metal will be a ________ bond.

a)

metal

b)

ionic

c)

covalent

d)

polar

30.

The chemical bond between a metal and a non-metal will be a _____ bond.

a)

metal

b)

ionic

c)

covalent

d)

polar

31.

Beryllium and sulfur will form a ______ bond

a)

ionic

b)

covalent

c)

metalloid

32.

Sodium and Bromine will make a _____ bond.

a)

ionic

b)

covalent

c)

metallic

33.

Carbon and Oxygen will make a ___________ bond.

a)

ionic

b)

covalent

c)

metallic

34.
4Si + S8 --> 2Si2S4
a)
Synthesis
b)
Decomposition
c)
Single displacement
d)
Double displacement
35.
3Ca + 2AlCl3 --> 3CaCl2 + 2Al
a)
Synthesis
b)
Decomposition
c)
Single diplacement
d)
Double displacement
36.
3KOH + H3PO4 --> K3PO4 + 3H2O
a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Double displacement
37.
2Pb(NO3)2 --> 2PbO + 4NO2 + O2
a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Combustion
38.
Fe + H2SO4 --> Fe2(SO4)3 + H2
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
39.

What is the left part of a chemical equation called?

2H2 + O2 ---> 2H2O

a)

Reactants

b)

Yields

c)

Products

d)

Chemical equation

40.

What is the right part of a chemical equation called?

2H2 + O2 ---> 2H2O

a)

Reactants

b)

Yields

c)

Products

d)

Chemical Equation

41.

What is the total number of atoms present in 5Na3PO4?

a)

5

b)

55

c)

40

d)

8

42.

How many Mn atoms are found in the following compound?

2MnO4

a)

1

b)

2

c)

4

d)

8

43.

What is the little number after an element in a chemical equation called?

Example: H2

a)

Coefficient

b)

Atom

c)

Subscript

d)

Equation

44.

What is the number before a chemical formula called?

Example: 2H2 + O2 ---> 2H2O

a)

Coefficient

b)

Atom

c)

Subscript

d)

Equation

45.

Which of the following equations are correctly balanced?

a)

12CO2 + H2O ---> C6H12O6 + O2

b)

CO2 + H2O ---> 3C6H12O6 + O2

c)

CO2 + 9H2O ---> C6H12O6 + O2

d)

6CO2 + 6H2O ---> C6H12O6 + 6O2

46.

Which of the pictures below shows a balanced representation of

H2 + O2 → H2O?

a)
b)
c)
d)
47.

What law governs the balancing of chemical equations?

a)

Law of Energy

b)

Law of Conservation of Matter/Mass

c)

Law of Gravity

d)

Law of Matter Movement

48.

Balance this equation

_Al +_HCl --> _H2 +_AlCl3

a)

2,6,3,2

b)

it's already balanced

c)

4,12,3,4

d)

2,1,4,5

49.

What are the coefficients that would properly balance this equation?

__Ca + __H2O --> __Ca(OH)2 + __H2

a)

2,1 --> 2,1

b)

1,2 --> 1,1

c)

1,2 --> 2,4

d)

1,2 --> 2,1

50.
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__CO + __Fe2O3--> __Fe + __CO2
a)
3,1 --> 2,3
b)
3,2 --> 1,1
c)
3,2 --> 2,4
d)
3,2 --> 2,1
51.

What are the coefficients that would properly balance this equation?

__AgNO3 + __H2S --> __Ag2S+ __HNO3

a)

2,1 --> 1,2

b)

1,2 --> 1,1

c)

1,2 --> 1,2

d)

1,2 --> 2,1

52.

What are the coefficients that would properly balance this equation?

__Al + __O2--> __Al2O3

a)

4,1 --> 2

b)

4,3 --> 4

c)

3,4 --> 1

d)

4,3 --> 2

53.
In an exothermic reaction, heat is ...
a)
taken in
b)
given out
54.

In an endothermic reaction, heat is ...

a)

taken in

b)

given out

55.
If a chemical reaction is EXOTHERMIC, the temperature would....
a)
Stay the same
b)
Increase
c)
Decrease
56.

Bond making is

a)

Endothermic

b)

Exothermic

57.

Bond breaking is..

a)

Endothermic

b)

Exothermic

58.

Is this showing an endothermic or an exothermic reaction?

a)

Endothermic

b)

Exothermic

59.

Which letter shows the heat change?

a)

A

b)

B

c)

C

d)

D

e)

E

60.

Which letter represents the reactants?

a)

A

b)

B

c)

C

d)

D

e)

E

61.

Which letter represents the products?

a)

A

b)

B

c)

C

d)

D

e)

E

62.

What is the Heat of Reaction ΔH\Delta H  for this reaction?

a)

-200 KJ

b)

200 KJ

c)

400 KJ

d)

-300 KJ

63.
Energy is transferred as heat between two objects of ___________ temperatures. 
a)
differing
b)
same
64.

A 15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°C to 175°C. Calculate the specific heat capacity of iron.

a)

0.46 J/goC

b)

1.654 J/goC

c)

2,567,446.875 J/goC

65.

How many joules of heat are needed to raise the temperature of 10.0 g of aluminum from 22.0°C to 55.0°C, if the specific heat of aluminum is 0.903 J/g°C?

a)

298 Joules

b)

0.003 Joules

c)

297 J/g°C

d)

0.003 J/g°C

66.

A 300.0 g piece of copper is heated and fashioned into a bracelet. The amount of energy transferred by heat to the copper is 66,300 J. If the specific heat of copper is 0.3845 J/g 0C, what is the change of the copper's temperature?

a)

641 °C

b)

7,650,000 Joules

67.
When a  piece of aluminum foil is taken out of the oven and cools from 100° to 50°, What is the change in temperature?
a)

-50°

b)

-100°

c)
100°
d)

50°

68.

The specific heat of aluminum is 0.9025 J/g°C. How much heat(Q) is released when a 10.0 g piece of aluminum foil is taken out of the oven and cools from 100.0° to 50.0°?

a)

451 J

b)

45.1 J

c)

400 J

69.

20.0 g of water. specific heat of water is 4.184 J/g°C. temperature changes from 25.0° C to 20.0° C, how much heat energy (Q) moves from the water to the surroundings?

a)

418 Joules

b)

209 J

c)

83 J

d)

4.18 J

70.
Mole ratios are obtained from the
a)
balanced chemical equation
b)
periodic table
c)
molar mass
71.
What is the mole ratio of H2O to H3PO4 in the following chemical equation?   P4O10 + 6 H2O --> 4 H3PO
a)
6:4
b)
4:6
c)
1:3
d)
3:1
72.
2Al + 3H2SO4 -> Al2(SO4)3 + 3H2
How many grams of aluminum sulfate would be formed if 250g H2SO4 completely reacted with aluminum?
a)
0.85 g
b)
290 g
c)
450 g
d)
870 g
73.
For the reaction represented by the equation Cl2 + 2KBr → Br2 + 2KCl, how many grams of potassium chloride can be produced from 356 grams potassium bromide?
a)
749 g
b)
225 g
c)
479 g
d)
814 g
74.

How many grams are in 7.8 moles of NaCl?

a)

476 grams

b)

460 grams

c)

452 grams

d)

462 grams

75.
Balance the following reaction :
 
CaC₂(s)   +   H₂O(l)   -->   C₂H₂(g)   +   Ca(OH)₂(aq)
a)
1,2,2,2
b)
1,2,1,1
c)
2,1,1,1
d)
2,1,2,1
76.
Using the following equation:
Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(l)
How many moles of iron can be made from  6 moles H2
a)
4 moles Fe
b)
6 moles Fe
c)
9 moles Fe
d)
2 moles Fe
77.
2H2  +   O2  →  2H2O
How many moles of oxygen are consumed if 8 moles H2 are used?
a)
2
b)
4
c)
6
d)
8
78.
For the Balanced Reaction: 3 Mg + 1 Fe2O3 → 3 MgO + 2 Fe; What is the Ratio of moles of MgO to moles Fe?
a)
3mol Mg / 2 mol Fe
b)
2 mol Mg/ 3 mol Fe
c)
1 mol Fe/ 2 mol Fe
d)
3 mol MgO / 2 mol Fe
79.

2Al + 6HCl --> 2AlCl3 + 3H2

Aluminium reacts with hydrochloric acid. How many grams of aluminum are necessary to produce 11 L of hydrogen gas at STP?

a)

13

b)

8.8

c)

0.99

d)

1.0

80.

Mg3N2 + 3H2O ––> 3 MgO + 2NH3

If 10.3 g of magnesium nitride is used, what volume of ammonia gas would be collected at 20˚C and 0.989 atm?

a)

4.9 L NH3

b)

4.96 L NH3

c)

0.261 L NH3

d)

0.26 L NH3

81.

1Mg + 2H2O --> Mg(OH)2 + H2

What volume of hydrogen will be produced at STP by the reaction 67.3 g of magnesium?

a)

62.0 L

b)

0.12 L

c)

2.77 L

d)

1.15 L

82.
Based on the activity series, will this reaction occur?
Br2 (l) + KI (aq) →
a)
Yes
b)
No
83.
Based on the activity series, will this reaction occur?
Ni (s) + H2O (l) →
a)
Yes
b)
No
84.
Based on the activity series, will this reaction occur?
Au (s) + HCl (l) →
a)
Yes
b)
No
85.
A mixture contains cobalt metal, copper metal, and tin metal. This mixture is mixed with nickel nitrate. Which metals, if any, will react? 
a)
Cobalt only
b)
Copper only
c)
Tin only
d)
All 3
86.

Predict the product(s) of this reaction (don't worry about balancing):

Li + H2O →

a)

Li2O + H2

b)

LiO + H2

c)

LiOH + H2

d)

Li(OH)2

87.
Predict the product(s) of this reaction (Don't worry about balancing) 
Pb(NO3)2  +  KI →
a)
PbK +  I NO3
b)
not possible
c)
PbI2  +  KNO3
d)
PbI  + KNO3
88.
What  will be the result of the following: 
Li + NaF ->
a)
Li will replace F
b)
Na will replace Li
c)
Li will replace Na
d)
no reaction will occur
89.

Oxidation is the _________ of electrons.

a)

loss

b)

gain

c)

sharing

d)

transfer

90.

Reduction is the ___________ of electrons.

a)

loss

b)

gain

c)

sharing

d)

transfer

91.
Which statement is true:
Mg → Mg2+ + 2e
a)
Mg gains 2 electrons
b)
Mg2+ loses 2 electrons
c)
Mg loses 1 electron
d)
Mg loses 2 electrons
92.

In a reaction, copper is reduced; its number of electrons has:

a)

Increased

b)

Decreased

c)

Remained Constant

d)

Varies Randomly

93.

A wave with a large wavelength will have a ______ frequency and _____ energy

a)

high, low

b)

high, high

c)

low, high

d)

low, low

94.

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

95.

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

96.
The distance from one point to the next corresponding point on a wave is called the ________________.
a)
waveform
b)
peak
c)
amplitude
d)
wavelength
97.

What is the value of Planck's Constant?

(a)  

98.

A blue light has a wavelength of 4x10^-7 m. What is its frequency, to one decimal place?

(a)  

99.

When an electric stove glows red, it is producing near-IR light, of wavelength about 7.9x10^-7 m. What is its frequency to 3 decimal places?

(a)  

100.

A blacklight that makes neon things glow in the dark has a wavelength of about 3.15x10^-7 m. What is its frequency? (2 decimal places please!)

(a)  

101.

A soda bottle is about 13 inches tall, or 3.3x10^-1 m. An electromagnetic wave of the same wavelength would be what type of wave?

a)

Radio wave

b)

Micro wave

c)

Visible light

d)

X-ray

102.

A certain wave has a frequency of 2.68 x 10^6 Hz. How much energy does it have? (1 decimal places please.)

(a)  

103.

PET scans for medical imaging usually involve a small amount of radioactive decay, producing a gamma ray of about 1.24x10^20 Hz. How much energy does this radiation have? (3 decimal places please!)

(a)