wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

PS Unit 6/7

Total questions: 80

Worksheet time: 2hrs 44mins

Name
Class
Date
1.
In the equation,          2Mg + O2 ---> 2MgO, which are the reactants?
a)
Mg and O
b)
MgO
c)
Mg and MgO
d)
O and MgO
2.
Balance this equation, Ca + H2O --> CaO + H2
a)
Ca + 2H2O --> CaO + 2H2
b)
2Ca + H2O --> CaO + H2
c)
Its balanced as it is
d)
Cannot be balanced
3.
What type of chemical reaction is this one?
Al(OH)3 --> Al2O3  + H2O
a)
Decomposition
b)
Combustion
c)
Synthesis
d)
Single Replacement 
4.
What type of chemical reaction is this one?
CUO + CO2 --> CuCO3
a)
Decomposition
b)
Combustion
c)
Synthesis
d)
Single Replacement 
5.
What type of chemical reaction is this one?
Ca + MgCl2 --> CaCl2 + Mg
a)
Decomposition
b)
Combustion
c)
Synthesis
d)
Single Replacement 
6.
What is a coefficient?
a)
The small number on the right of the chemical symbol.
b)
The large number to the left of a formula.
7.
What coefficients are needed to correctly balance the equation?
_Bi   +   _O2   >   _Bi2O3
a)
3,2,3
b)
2,3,2
c)
4,3,2
d)
none of these
8.

Why must chemical equations be balanced?

a)

So that the equation doesn't explode

b)

The reaction won't happen until it is balanced

c)

Based on the Law of Conservation of Matter, matter cannot be created or destroyed.

d)

Based on the Law of Conservation of Energy, energy cannot be created or destroyed.e

9.
The right side of the equation below is called the
a)
products
b)
reactants
10.
What type of reaction is illustrated below?
2HI --> H2  +  I2
a)
synthesis
b)
decomposition
c)
single replacement
d)
double replacement
11.

What type of reaction is illustrated below?

Zn + H2S --> ZnS + H2

a)

synthesis

b)

decomposition

c)

single replacement

d)

double replacement

12.
Which of the following options correctly balances the equation below?
__HNO2 + __O2 --> __HNO3
a)
4, 1, 4
b)
1, 2, 1
c)
1, 2, 1
d)
2, 1, 2
13.
Which of the following answers will balance the equation below?
__K + __Br2 --> __KBr
a)
2, 1, 1
b)
2, 3, 2
c)
2, 1, 2
d)
1, 2, 3
14.
What type of chemical reaction is this one?
Ca + MgCl2 --> CaCl2 + Mg
a)
Decomposition
b)
Combustion
c)
Synthesis
d)
Single Replacement 
15.
What type of chemical reaction is this one?
C2H2 + O2 --> CO2 + H2O
a)
Decomposition
b)
Combustion
c)
Synthesis
d)
Single Replacement 
16.
3KOH + H3PO4 --> K3PO4 + 3H2O
a)
Combination
b)
Decomposition
c)
Single replacement
d)
Double replacement
17.
__H2O2 --> __H2O + __O2
a)
already balanced
b)
2,1,1
c)
2,2,1
d)
2,1,2
18.
__NaClO3 --> __NaCl + __O2
a)
2,2,2
b)
2,2,3
c)
3,2,2
d)
1,2,3
19.
__C6H12O6 + __O2 --> __H2O + __CO2
a)
1,6,6,6
b)
already balanced
c)
1,6,1,6
d)
2,12,12,12
20.
_AgNO3 + _Cu →_Cu(NO3)2 + _Ag
a)
2 AgNO3 + 2 Cu → 3 Cu(NO3)2 + 1 Ag
b)
2 AgNO3 + 1 Cu → 1 Cu(NO3)2 + 2 Ag
c)
1 AgNO3 + 2 Cu → 2 Cu(NO3)2 + 1 Ag
d)
3 AgNO3 + 2 Cu → 3 Cu(NO3)2 + 2 Ag
21.
Balance this equation:
MgCl2 --> Mg4+ Cl2
a)
It's already balanced.
b)
4MgCl2 --> Mg4+ 4Cl2
c)
4MgCl2 --> Mg4+ 5Cl2
22.
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__FeCl3 + __Ca(OH)2 --> __Fe(OH)3 + __CaCl2
a)
4,3--> 2,1
b)
3,2 --> 3,1
c)
2,3 --> 2,2
d)
2,3 --> 2,3
23.
Balance this equation:
 2Li + Cl2 -> LiCl
a)
2Li + Cl2 -> 4LiCl2
b)
2Li + Cl2 -> LiCl2
c)
2Li + Cl2 -> 2LiCl
24.
What does the Law of Conservation of Mass state?
a)
Matter cannot be gained or lost in a chemical reaction.
b)
Matter can only be lost in a chemical reaction.
c)
Matter can only be gained in a chemical reaction.
d)
Matter can be gained and lost in a chemical reaction. 
25.

How many Hydrogen atoms do I have in the following compound?

2(NH4)3PO42\left(NH_4\right)_3PO_4  

a)

4

b)

12

c)

9

d)

24

26.

What number will balance the following chemical reaction?

S8+8O2→S_8+8O_2\rightarrow  _ SO2SO_2  

a)

1

b)

4

c)

8

d)

16

27.
What is the molar mass of NaOH?
a)
40 g/mol
b)
38.989 g/mol
c)
23.998 g/mol
d)
57.004 g/mol
28.
What is the molar mass of AuCl3?
a)
96 g
b)
130 g
c)
232.5 g
d)
303.3 g
29.
How many molecules of sugar (C6H12O6) are in a mole?
a)
24 molecules
b)
180 molecules
c)
180 g
d)
6.02 x 1023 molecules
30.
How many atoms of carbon are in 6.00g of carbon?
a)
1.20x1024atoms C
b)
6.02x1023atoms C
c)
3.01x1023atoms C
d)
1.50x1023atoms C
31.
How many moles are in 3.01 x 1022 atoms of magnesium?
a)
0.05 moles
b)
1.81 x 1046 moles
c)
5.00 x 1021 moles
d)
5 moles
32.
What is the mass of 0.89 mol of CaCl2?
a)
111 grams
b)
0.008 grams
c)
98.9 grams
d)
none of the choices
33.
How many moles are in 22 g of argon? 
a)
880 moles
b)
0.55 moles
c)
1.81 moles
d)
5 moles
34.

How many grams of magnesium chloride are produced if 4.67 moles of HCl react?

Mg + 2 HCl --> MgCl2 + H2

a)

222 g MgCl2

b)

4.67 g MgCl2

c)

94 g MgCl2

35.

How many grams of N2 are produced if 4.03 moles of NH3 react?

4 NH3 + 3 O2 --> 2 N2 + 6 H2O

a)

28.0 g N2

b)

56.4 g N2

c)

2.02 g N2

36.

S8 + 12 O2 → 8 SO3


How many moles of S8 is needed to produce 12 moles of SO3?

a)

1

b)

1.5

c)

2

d)

12

37.

2 KClO3 → 2 KCl + 3 O2


How many moles of KCl is produced when 6.75 moles of O2 is also produced?

a)

2

b)

3.5

c)

4.5

d)

6.75

38.

How many grams are in 7.8 moles of NaCl?

a)

476 grams

b)

460 grams

c)

452 grams

d)

462 grams

39.
What is the mass of 0.89 mol of CaCl2?
a)
111 grams
b)
0.008 grams
c)
98.9 grams
d)
none of the choices
40.

Oxidation is the _________ of electrons.

a)

loss

b)

gain

c)

sharing

d)

transfer

41.

Reduction is the ___________ of electrons.

a)

loss

b)

gain

c)

sharing

d)

transfer

42.
     In the reaction Zn + H2O --> ZnO2 + H2
 which element, if any, is oxidized? 
a)
Zinc
b)
Hydrogen
c)
Oxygen
d)
None
43.

Which element was reduced in the reaction below?

Na + PbCl2 → Pb + NaCl

a)

Na

b)

Pb

c)

Cl

d)

No element was reduced

44.
In the reaction
2Ca(s) + O2(g) --> 2CaO(s), calcium is __________
a)
Reduced
b)
Synthesized
c)
Oxidized
d)
None of the above
45.

O2(g) + 2 H2 (g) → 2 H2O (g) + EnergyO_2\left(g\right)\ +\ 2\ H_2\ \left(g\right)\ \rightarrow\ 2\ H_2O\ \left(g\right)\ +\ Energy  

a)

endothermic

b)

exothermic

46.

6 CO2+ 6 H2O + Energy → C6H12O6 + 6 O26\ CO_2+\ 6\ H_2O\ +\ Energy\ \rightarrow\ C_6H_{12}O_6\ +\ 6\ O_2

a)

endothermic reaction

b)

exothermic reaction

47.

In an endothermic reaction, heat is ...

a)

taken in

b)

given out

48.
In an exothermic reaction, heat is ...
a)
taken in
b)
given out
49.
Increase in temperature of the reactants can do one of the following
a)
Slow collision frequency
b)
Allow less effective collision between the particles
c)
Neutralise the reaction
d)
increase collision between the particles thus increasing the rate.
50.
To slow down a chemical reaction you will do one of the following:
a)
Place the reactants in hot water
b)
Place the products in ice bath
c)
Place the reactants in a ice bath
d)
Keep stirring the reactants with a stirring rod
51.
A ______________ is a substance that increases the rate of a reaction without being used up during the reaction. 
a)
catalyst
b)
product
c)
reactant
d)
solute
52.

What does a catalyst do to speed up a reaction?

a)

It reduces the surface area of the reactants

b)

It increases the surface area of the reactants.

c)

It reduces the required energy for a chemical reaction to occur and provides an alternative pathway.

d)

It increases the required energy for a chemical reaction to occur

53.

Such reactions which continue in both directions are called:

a)

Irreversible reactions

b)

Reversible reactions

c)

Non-reactive reactions

d)

dynamic reactions

54.
2SO2(g)+O2(g)⇌2SO3(g)
Removing O2(g) will
a)
shift equilibrium right
b)
shift equilibrium left
c)
decrease temperature
d)
have no change
55.
2SO2(g)+O2(g)⇌2SO3(g)
Adding SO2(g) will
a)
shift equilibrium right
b)
shift equilibrium left
c)
increase rate of reaction
d)
have no change
56.
This symbol indicates that a reaction is ____________
a)
reversible
b)
irreversible
57.
For the reaction...
heat  +  N2  +  O2  ↔  2NO
If the heat is added to the chemical system, the equilibrium will shift _______.
a)
left
b)
right
c)
left and right
d)
neither left nor right
58.

A bond between two nonmetal atoms is a __________ bond.

a)

ionic

b)

nuclear

c)

metallic

d)

covalent

59.

Which of the following is NOT a covalent bond?

a)

K2S

b)

H2O

c)

I2

d)

CO2

60.

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

61.

Ionic bonds form between ---

a)

nonmetals.

b)

metals and nonmetals.

62.
What is the name for an ion with a negative charge?
a)
cation
b)
anion
c)
onion
d)
union
63.
An ionic bond forms when atoms ___________ electrons.
a)
gain
b)
share
c)
increase
d)
transfer
64.

Which of the following is true about Ionic Bonds? (select ALL TRUE options)

a)

High melting point

b)

Low melting point

c)

Can dissolve in water

d)

Cannot dissolve in water

e)

Can conduct electricity

65.
Why do elements bond?
a)
To be friends
b)
To create a new element
c)
To become stable
66.

Electrons located on the outermost shell are called _________ electrons

a)

Hybrid

b)

Atomic

c)

Neutral

d)

Valence

67.

Which of the following would be the correct formula for a compound of Aluminum and Fluorine?

a)

AlF3

b)

Al2F3

c)

AlF2

d)

AlFI

68.
What formula results when Ca+2  and  Br- ions bond?
a)
Ca2Br2
b)
CaBr
c)
Ca(br)2
d)
CaBr2
69.
How do the following two elements bond together?
Cr3+  O2-         
a)
CrO
b)
Cr3O2
c)
Cr2O3
d)
CrO3
70.
What is ionization energy?
a)
Energy required to remove an electron
b)
Energy needed to split an electron
c)
Energy required to add an electron
71.

Ionization energy __________ as you go across a period

a)

stays the same

b)

decreases

c)

increases

72.

Name the following ionic compound: BeCl2

a)

beryllium chlorine

b)

beryllium II chloride

c)

beryllium chloride

d)

beryllium dichloride

73.

If two identical atoms bond covalently, the bond is:

a)

a coordinate covalent bond

b)

a dipole covalent bond

c)

a nonpolar covalent bond

d)

a polar covalent bond

74.

dichloride pentoxide

a)

Cl2O5

b)

ClO5

c)

Cl5O2

d)

Cl2O6

75.

Name this compound

SeH3

a)

triselenium trihydride

b)

Selenium hydride

c)

Trihydrogen monoselenide

d)

Selenium trihydride

76.
 Li2O
a)
Dilithium oxideDilithium oxide
b)
Lithium oxide
c)
Lithium dioxide
77.
The name of Cu₃N₂ is
a)
copper (III) nitride
b)
copper (II) nitride
c)
copper nitride
d)
tricopper dinitride
78.
The name for CrN:
a)
Chromium nitride
b)
Chromium (I) nitride
c)
Chromium (III) nitride
d)
Chromium nitride (III)
79.
What is the formula for tin (II) nitride?
a)
Sn3N2
b)
SnN2
c)
Sn3N
d)
SnN
80.
If copper (II) and phosphate bond together, the resulting chemical formula would be:
a)
Cu2(PO4)3
b)
CuPO4
c)
Cu3(PO4)2
d)
Cu3PO4

Similar Resources on Wayground

Science 10 Chemistry Unit Exam

80 questions

Science 10 Chemistry Unit Exam

quiz

Worksheet

•

10th Grade

Cells

80 questions

Cells

quiz

Worksheet

•

9th - 10th Grade

Immune System

85 questions

Immune System

quiz

Worksheet

•

10th - 12th Grade

Unit #7: Stoichiometry Practice

80 questions

Unit #7: Stoichiometry Practice

quiz

Worksheet

•

9th - 12th Grade

Unit4Test_Genetics_Review

85 questions

Unit4Test_Genetics_Review

quiz

Worksheet

•

10th Grade

Macromolecules Review

78 questions

Macromolecules Review

quiz

Worksheet

•

9th - 12th Grade

Ionic and Covalent Bonds

75 questions

Ionic and Covalent Bonds

quiz

Worksheet

•

9th - 12th Grade

Forensic Evidence Review Game

77 questions

Forensic Evidence Review Game

quiz

Worksheet

•

9th - 12th Grade