wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

M8 Chem Chemical Reactions

Total questions: 57

Worksheet time: 55mins

Name
Class
Date
1.

Match the following

a)

decomposition reaction

1.

a reaction in which a compound breaks down into two or more elements

b)

coefficient

2.

a number written in front of a chemical formula

c)

precipitate

3.

a solid produced during a chemical reaction solution

d)

aqueous solution

4.

a solution in which the solvent is water

e)

chemical equation

5.

statement that uses chem formulas to show identities and relative amounts of substance in chem react

2.

Match the following

a)

complete ionic equation

1.

an equation that shows all of the particles in solution as they actually exist

b)

solute

2.

a substance dissolved in a solution

c)

net ionic equation

3.

an equation that includes only the particles that participate in the reaction

d)

spectator ion

4.

an ion that is present but does not participate in a reaction

e)

reactant

5.

the most plentiful substance in a solution

3.

Match the following

a)

combustion reaction

1.

a reaction in which oxygen combines with a substance and releases heat and light energy

b)

single replacement

2.

a reaction in which the atoms of one element replace the atoms of another element in a compound

c)

double replacement

3.

a reaction involving the exchange of positive ions between two compounds dissolved in water

d)

chemical reaction

4.

the process by which atoms or one or more substances are rearranged to form different substances

e)

synthesis reaction

5.

a reaction in which two or more substances react to produce a single product

4.

Match the following

a)

product

1.

a substance formed during a chemical reaction

b)

reactant

2.

a starting substance in a chemical reaction

c)

solute

3.

a substance dissolved in a solution

d)

solvent

4.

the most plentiful substance in a solution

e)

precipitate

5.

a solid produced during a chemical reaction solution

5.

Assume that Q, T, X, and Z are symbols for elements. Match each equation with the reaction type it represents.

a)

Q+XZ → X+QZQ+XZ\ \rightarrow\ X+QZ

1.

single replacement

b)

Q+Z → QZQ+Z\ \rightarrow\ QZ

2.

synthesis

c)

QT → Q+TQT\ \rightarrow\ Q+T

3.

decomposition

d)

QT+XZ → QZ+XTQT+XZ\ \rightarrow\ QZ+XT

4.

double replacement

6.

Choose the most correct sentence to describe the following reaction: Fe(s) + O2(g) --> Fe2O3(s)

a)

An iron solution forms oxygen gas and solid iron oxide.

b)

Solid iron and oxygen gas react to form solid iron(III) oxide.

c)

Solid iron and oxygen make iron oxide.

d)

Iron and dioxygen gas produce solid iron(II) oxide.

7.

"Solid zinc oxide is produced by combining zinc powder with oxygen gas." What is the correct skeleton equation for this reaction?

a)

ZnO (s) --> Zn (s) + O2 (g)

b)

ZnO (s) --> Zn + O (g)

c)

Zn (s) + O2 (g) --> ZnO (s)

d)

Zn + O --> ZnO

8.

What are the 7 elements are always found as diatomics (two bonded together, like X2) when they are in their pure form (not part of a compound)?

a)

Br, I, N, Cl, H, O, F

b)

B, I, N, C, H, O, F

c)

B, R, O, F, In, C, H

d)

Br, I, Ni, C, Ho, F

9.

Which is the correct skeleton equation for the following: Barium Chloride combined with sodium sulfide yields barium sulfide and sodium chloride

a)

BaCl + NaS → BaS+ NaCl

b)

BaCl2 + Na2S → BaS+ NaCl

c)

BaS+ NaCl → BaCl + NaS

d)

BaCl2 + Na2S → BaS+ NaCl2

10.

Which is the correct net ionic equation for the reaction of:

AgNO3 (aq) + CaCl2 (aq) -> AgCl (s) + Ca(NO3)2 (aq)

a)
Ca2+(aq) +  2Cl- (aq) → CaCl(s)
b)
Ag+(aq)  +  Cl- (aq) → AgCl(s)
c)
Ag +  Cl  →  AgCl
d)
Ag+  +  Ca2+   →Ag2Ca (s)
11.
What are the spectator ions in this reaction?
CuCl2(aq) + NaOH(aq) → Cu(OH)2(s) + NaCl(aq)
 
a)
Cu2+ and OH1-
b)
Na2+ and Cl2-
c)
Na1+ and Cl1-
d)
Na1+ and OH1-
12.

What is the correct net ionic equation for the reaction between HBr(aq) and LiOH(aq) that produces LiBr(aq) and H2O(l)?

a)

2 H+(aq) + O2-(aq) → H2O(l)

b)

2 H2 (aq) + O2(aq) → 2 H2O(l)

c)

2 H2 (g) + O2(g) → 2 H2O(l)

d)

H+(aq) + OH-(aq) → H2O(l)

13.

What is the net ionic equation for the reaction between K3PO4 (aq) and CuSO4 (aq) that produces K2SO4 (aq) and Cu3(PO4)2 (s)?

a)

2 K+(aq) + SO42-(aq) → K2SO4 (s)

b)

K+(aq) + SO42-(aq) → KSO4 (s)

c)

2 Cu2+(aq) + 3 PO43-(aq) → Cu3(PO4)2 (s)

d)

Cu2+(aq) + PO43-(aq) → CuPO4 (s)

14.
Which is the name of the kind of solid substance formed in this figure?  
a)
aqueous 
b)
precipitate
c)
acid
d)
synthesis 
15.

Which of the following reactions does NOT form a precipitate?

a)

Pb(NO3)2 (aq) + 2KI (aq) → PbI2 (s) + 2KNO3 (aq)

b)

Pb(NO3)2 (aq) + K2SO4 (aq) → PbSO4 (s) + KNO3 (aq)

c)

AgNO3 (aq) + Na2S (aq) → Ag2S (s)+ NaNO3 (aq)

d)

KCl (aq) + NaNO3 (aq) → NaCl (aq) + KNO3 (aq)

16.

What are the spectator ions in this reaction?

NaCl(aq) + AgNO3(aq) → AgCl(s) + NaNO3(aq)

a)

Ag+ and NO3-

b)

Na+ and Cl-

c)

Na+ and NO3-

d)

Ag+ and Cl-

17.

What is the result of this reaction?

2KBr(aq) + Na2S(aq) → K2S(aq) + 2NaBr(aq)

a)

K2S precipitates

b)

NaBr precipitates

c)

KBr precipitates

d)

No precipitate is formed

18.

Which is the correct net ionic equation for this reaction?

3KOH(aq) + FeCl3(aq) → 3KCl(aq) + Fe(OH)3(s)

a)

3K+ (aq) + 3Cl- (aq) → 3KCl (s)

b)

Fe3+ (aq) + 3OH- (aq) → Fe(OH)3 (s)

c)

Fe3+ (aq) + Cl- (aq) → Fe(OH)3 (s)

d)

3K+ (aq) + 3OH- (aq) + Fe3+ (aq) + 3Cl- (aq) → Fe(OH)3 (s)

19.

What are the spectator ions in this reaction?

3Pb(NO3)2(aq) + 2AlCl3(aq) → 3PbCl2(s) + 2Al(NO3)3(aq)

a)

Pb2+ and Cl-

b)

Cl- and Al3+

c)

Al3+ and NO3-

d)

NO3- + Pb2+

20.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
d)
Left side is balanced
21.
Fill in the blanks with coefficient:
PCl5+_ H2O→_ HCl+H3PO4
a)
4, 5
b)
1, 6
c)
3, 8
d)
2,2
22.
Balance this equation
_Zn+_HCl-->_ZnCl2 +_H2
a)
1,1,2,1
b)
1,1,1,2
c)
1,2,1,1
d)
2,1,1,1
23.
Balance this equation.
_Mg + _Cl2 --> _MgCl2
a)
1, 2,1
b)
already balanced
c)
2,1,1
d)
1,1,2
24.
Balance this equation
_N2 + _H2 --> _NH3
a)
1,2,3
b)
1,3,2
c)
1,1,2
d)
2,1,1
25.
N2 + H2 = NH4
a)
Balanced
b)
Unbalanced
26.
Name the part in red:

H2 + O2 -> H2O
a)
Coefficient
b)
Product
c)
Yield
d)
Subscript
27.
Name the part in red:

_2_H2 + _1_O2 -> _2_H2O
a)
Coefficient
b)
Product
c)
Yield
d)
Subscript
28.
Name the part in red:

H2 + O2 -> H2O
a)
Coefficient
b)
Product
c)
Reactant
d)
Subscript
29.
Name the part in red:

H2 + O2 -> H2O
a)
Coefficient
b)
Product
c)
Reactant
d)
Subscript
30.
Which number should go in the blank?
_ H2 + O2 -> 2 H2O
a)
1
b)
2
c)
3
d)
0
31.
Is this balanced?
Al + O2 → 2Al2O3
a)
Yes
b)
No
32.

What is the arrow in a chemical equation...

H2 + O2 --> H2O

a)

Reactants

b)

Products

c)

Yields

d)

Chemical Equation

33.
Which problem is balanced?
a)
PbO2 + 2H2
b)
SO2 + H20 --> H2SO4
c)
2Na + 2H2O --> 2NaOH + H2
34.
Balance this equation:
MgCl2 --> Mg4+ Cl2
a)
It's already balanced.
b)
4MgCl2 --> Mg4+ 4Cl2
c)
4MgCl2 --> Mg4+ 5Cl2
35.
Balance this equation:
FeS + 2HCl -->
FeCl2 + H2O
a)
FeS2 + 2HCl --> FeCl2 + H2O
b)
It's already balanced
c)
FeS2 + 2HCl --> FeCl2 + H4O
d)
None of these
36.
Balance this equation:
 2Li + Cl2 -> LiCl
a)
2Li + Cl2 -> 4LiCl2
b)
2Li + Cl2 -> LiCl2
c)
2Li + Cl2 -> 2LiCl
37.
4Si + S8 --> 2Si2S4
a)
Synthesis
b)
Decomposition
c)
Single displacement
d)
Double displacement
38.
4Si + S8 --> 2Si2S4
a)
Synthesis
b)
Decomposition
c)
Single displacement
d)
Double displacement
39.
3Ca + 2AlCl3 --> 3CaCl2 + 2Al
a)
Synthesis
b)
Decomposition
c)
Single diplacement
d)
Double displacement
40.
3KOH + H3PO4 --> K3PO4 + 3H2O
a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Double displacement
41.
2Pb(NO3)2 --> 2PbO + 4NO2 + O2
a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Combustion
42.
3Mg + N2 --> Mg3N2
a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Combustion
43.
2NO2 --> N2 + 2O2
a)
Synthesis
b)
Decomposition
c)
Single displacement
d)
Combustion
44.
P4 + 3O2 --> 2P2O3
a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Combustion
45.
Fe + H2SO4 --> Fe2(SO4)3 + H2
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
46.
Which reaction type is the following: C5H10O4 + O2 --> CO2 + H2O
a)
Decomposition
b)
Single Replacement
c)
Combustion
d)
Double Replacement
47.
Which of the following is the general formula for a decomposition reaction?
a)
A + B  → AB
b)
AB → A + B
c)
AB + C → AC + B
d)
AB + CD → AC + BD
48.
When balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balanced
a)
charge
b)
subscript
c)
random number
d)
coefficient
49.
What coefficient should be used to make the following equation balanced?
N2+O2--> _NO 
a)
1
b)
2
c)
3
d)
4
50.
Balance this equation:
 __Li + __Cl2 -> __LiCl
a)
2Li + Cl2 -> 4LiCl2
b)
2Li + Cl2 -> LiCl2
c)
2Li +  Cl2 -> 2LiCl
51.
C4H12 + O2 --> CO2 + H2O
a)
Synthesis
b)
Combustion
c)
Single Replacement
d)
Double Replacement
52.
H2SO4 + Fe -->H2 + FeSO4
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
53.
PbCl2 + AgNO3 ---> Pb(NO3)2 + AgCl 
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
54.
NH3 + HCl ---> NH4Cl 
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
55.
Which chemical reaction switches 2 elements?
a)
Double Replacement
b)
Single Replacement
c)
Combustion
d)
Decomposition
56.
Which chemical reaction takes place when 2 substances react to form a single product?
a)
Decomposition
b)
Double Replacement
c)
Single Replacement
d)
Synthesis
57.
At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?
a)
the product is doubled
b)
the product is half the mass of the reactants
c)
the mass is the same
d)
the mass changes depending on the reaction

Similar Resources on Wayground

Biomolecule Test Corrections

60 questions

Biomolecule Test Corrections

quiz

Worksheet

•

9th - 12th Grade

Biology EOC review

56 questions

Biology EOC review

quiz

Worksheet

•

9th Grade

Ôn rập KHTN-7

54 questions

Ôn rập KHTN-7

quiz

Worksheet

•

7th Grade - University

Chemical Reactions

53 questions

Chemical Reactions

quiz

Worksheet

•

9th - 12th Grade

Chemical Changes - GCSE

61 questions

Chemical Changes - GCSE

quiz

Worksheet

•

10th Grade

Enrichment - Unit 1 Review of Earth Systems and Interactions

61 questions

Enrichment - Unit 1 Review of Earth Systems and Interactions

quiz

Worksheet

•

9th - 12th Grade

ENERGY FULL REVIEW

61 questions

ENERGY FULL REVIEW

quiz

Worksheet

•

9th Grade

M3 Mt Exam review

57 questions

M3 Mt Exam review

quiz

Worksheet

•

9th Grade