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REVIEW: Unit 8

Total questions: 69

Worksheet time: 1hrs 11mins

Name
Class
Date
1.

​ (a)   H2 + ​ (b)   Cl2 → ​ (c)   HCl

Choose from the below words
1
2
3
4
5
6
7
8
9
10
2.

What is the right part of a chemical equation called?

2H2 + O2 ---> 2H2O

a)

Reactants

b)

Yields

c)

Products

d)

Chemical Equation

3.

In a balanced equation, the total number of atoms of each element on the left side (reactants) is _____ the total number of atoms on the right side (products).

a)

equal to

b)

greater than

c)

less than

d)

unequal to

4.

The Law of Conservation of Mass states that mass is ______ during a chemical reaction.

a)

created

b)

destroyed

c)

converted into energy

d)

neither created nor destroyed

5.

What is the number before a chemical formula called?

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

a)

Coefficient

b)

Atom

c)

Subscript

d)

Equation

6.

​ (a)   Al + ​ (b)   O2 → ​ (c)   Al2O3

Choose from the below words
4
3
2
1
5
6
7
8
9
10
7.

​ (a)   Fe + ​ (b)   O2 → ​ (c)   Fe2O3

Choose from the below words
4
3
2
1
5
6
7
8
9
10
8.

What is the left part of a chemical equation called?

2H2 + O2 ---> 2H2O

a)

Reactants

b)

Yields

c)

Products

d)

Chemical equation

9.

​ ​ (a)   NaHCO3 → ​ ​ (b)   Na2CO3 + ​ ​ (c)   H2O + ​ (d)   CO2

Choose from the below words
2
1
3
4
5
6
7
8
9
10
10.

​ (a)   ZnS + ​ (b)   O2 → ​ (c)   ZnO + ​ (d)   SO2

Choose from the below words
2
3
1
4
5
6
7
8
9
10
11.

​ ​ (a)   Sb + ​ (b)   O2 → ​​ ​ (c)   Sb4O6

Choose from the below words
4
3
1
5
6
7
8
9
10
2
12.

​ ​ ​ (a)   AgNO3 + ​ ​ (b)   Ni → ​​ ​ (c)   Ni(NO3)2 + ​ (d)   Ag

Choose from the below words
1
2
5
6
7
8
9
10
3
4
13.

​ ​ ​ ​ (a)   Zn + ​ ​ (b)   ​ AgCl → ​ (c)   ZnCl2 +​ ​ (d)   Ag

Choose from the below words
1
2
5
6
7
8
9
10
3
4
14.

​ ​ ​ ​ ​ (a)   KI + ​ ​ ​ (b)   ​ Pb(NO3)2 → ​ ​ (c)   KNO3 +​ ​ ​ (d)   PbI2

Choose from the below words
1
2
5
6
7
8
9
10
3
4
15.

​ ​ ​ ​ ​​ (a)   Ca + ​ (b)   H2O → ​​ (c)   Ca(OH)2 +​ ​​ (d)   H2

Choose from the below words
1
2
5
6
7
8
9
10
3
4
16.

​ ​ ​ ​ ​​​ (a)   Li + ​​ (b)   H2SO4 → ​ (c)   ​​Li2SO4 +​ ​ (d)   ​​H2

Choose from the below words
2
1
5
6
7
8
9
10
3
4
17.

​ (a)   S8 + ​ (b)   O2 → ​ (c)   SO2

Choose from the below words
1
8
5
6
7
9
10
3
4
2
18.

​ (a)   C2H2 + ​ (b)   O2 → ​ (c)   CO2 + ​ (d)   H2O

Choose from the below words
2
5
4
6
7
9
10
3
1
8
19.

​ (a)   H2SO4 + ​ (b)   NaCN → ​ (c)   HCN + ​ (d)   Na2SO4

Choose from the below words
2
1
6
7
9
10
3
8
4
5
20.

​ (a)   NH3→ ​ (b)   N2 + ​ (c)   H2

Choose from the below words
2
1
3
6
7
9
10
8
4
5
21.

​ (a)   AgNO3 + ​ (b)   NaCl → ​ (c)   AgCl + ​ (d)   NaNO3

Choose from the below words
1
6
7
9
10
8
4
5
3
2
22.

​ (a)   H3PO4 + ​ (b)   HCl → ​ (c)   PCl5 + ​ (d)   H2O

Choose from the below words
1
5
4
6
7
9
10
8
3
2
23.

​ (a)   As + ​ (b)   NaOH → ​ (c)   Na3AsO3 + ​ (d)   H2

Choose from the below words
2
6
3
7
9
10
8
1
4
5
24.

​ (a)   FeCl3 + ​ (b)   NaOH → ​ (c)   Fe(OH)3 + ​ (d)   NaCl

Choose from the below words
1
3
7
9
10
8
4
5
2
6
25.

​ (a)   LiOH + ​ (b)   CO2 → ​ (c)   Li2CO3 + ​ (d)   H2O

Choose from the below words
2
1
7
9
10
8
4
5
6
26.

​ (a)   Mg(OH)2 + ​ (b)   H2SO4 → ​ (c)   MgSO4 + ​ (d)   H2O

Choose from the below words
1
2
3
4
5
6
7
8
9
10
27.

​ (a)   AgNO3 + ​ (b)   CuCl2 → ​ (c)   AgCl + ​ (d)   Cu(NO3)2

Choose from the below words
2
1
3
4
5
6
7
8
9
10
28.

​ ​ (a)   C3H8 + ​ (b)   O2 → ​ (c)   CO2 + ​ (d)   H2O

Choose from the below words
1
5
3
4
2
6
7
8
9
10
29.

​ (a)   NaOH + ​ (b)   H3PO4 → ​ (c)   H2O + ​ (d)   Na3PO4

Choose from the below words
3
1
2
4
5
6
7
8
9
10
30.

​ (a)   NH3 + ​ (b)   F2 → ​ (c)   N2F4 + ​ (d)   HF

Choose from the below words
2
5
1
6
3
4
7
8
9
10
31.

​ (a)   MgCl2 + ​ (b)   NaOH → ​ (c)   Mg(OH)2 + ​ (d)   NaCl

Choose from the below words
1
2
3
4
5
6
7
8
9
10
32.

​ (a)   NH4NO3 → ​ (b)   N2O + ​ (c)   H2O

Choose from the below words
1
2
3
4
5
6
7
8
9
10
33.

​ (a)   Fe + ​ (b)   CuSO4    → ​ (c)   Cu + ​ (d)   Fe2(SO4)3

Choose from the below words
2
3
1
4
5
6
7
8
9
10
34.

​ (a)   H2S → ​ (b)   H2   + ​ (c)   S8

Choose from the below words
8
1
2
3
4
5
6
7
9
10
35.

​ (a)   Na2SO4 + ​ ​ (b)   CaF2 → ​ (c)   NaF + ​ (d)   CaSO4

Choose from the below words
1
3
4
5
6
7
8
9
10
36.

​ (a)   Mg + ​ (b)   CuSO4    → ​ (c)   Cu + ​ (d)   MgSO4

Choose from the below words
1
2
3
4
5
6
7
8
9
10
37.

​ (a)   AgNO3 + ​ (b)   Cu → ​ (c)   Ag + ​ (d)   Cu(NO3)2

Choose from the below words
2
1
3
4
5
6
7
8
9
10
38.

Na3PO4 + KOH → 3 NaOH + K3PO4

a)

Synthesis Reaction

b)

Single Displacement Reaction

c)

Double Replacement Reaction

d)

Decomposition Reaction

e)

Combustion

39.
 C + O2 → CO2
a)

Synthesis Reaction

b)

Decomposition Reaction

c)

Single Displacement Reaction

d)

Double Displacement Reaction

e)

Combustion

40.

Na3PO4 + KOH → 3 NaOH + K3PO4

a)

Synthesis Reaction

b)

Single Displacement Reaction

c)

Double Replacement Reaction

d)

Decomposition Reaction

e)

Combustion

41.
 C + O2 → CO2
a)

Synthesis Reaction

b)

Decomposition Reaction

c)

Single Displacement Reaction

d)

Double Displacement Reaction

e)

Combustion

42.
Mg + N2 →Mg3N2
a)

Synthesis Reaction

b)

Decomposition Reaction

c)

Single Replacement Reaction

d)

Combustion

e)

Double Replacement Reaction

43.

Cl2 + 2 KI → I2 + 2 KCl

a)

Synthesis Reaction

b)

Single Replacement Reaction

c)

Double Replacement

Reaction

d)

Decomposition Reaction

e)

Combustion

44.

​ (a)   are the elements or compounds that are formed in a chemical reaction.

Choose from the below words
Products
Polymers
Bonds
Reactants
Cations
Anions
Polyatomic ions
45.

Which of the following is an example of synthesis?

a)

Na + Br2 → NaBr

b)

KClO3 → KCl + O2

c)

HgO + Cl2 →HgCl + O2

d)

Cl2 + NaBr → NaCl + Br2

46.

What type of reaction is illustrated above?

a)

Synthesis/Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

47.

2 C5H10 + 15 O2 → 10 CO2 + 10 H2O

a)

Synthesis Reaction

b)

Decomposition Reaction

c)

Single Replacement Reaction

d)

Double Replacement Reaction

e)

Combustion

48.
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
49.

The reaction AB + XY --> XB + AY is an example of

(a)  

Choose from the below words
Double Replacement Reaction
Synthesis Reaction
Single Replacement Reaction
Decomposition Reaction
Combustion
50.

2 C5H5 + Fe → Fe(C5H5)2

a)

Double Replacement Reaction

b)

Synthesis Reaction

c)

Single Replacement Reaction

d)

Decomposition Reaction

e)

Combustion

51.

2 Ag2O → 4 Ag + O­2

a)

Double Replacement Reaction

b)

Synthesis Reaction

c)

Single Replacement Reaction

d)

Decomposition Reaction

e)

Combustion

52.

Cl2 + 2 KBr --> 2 KCl + Br2

a)

Synthesis Reaction

b)

Decomposition Reaction

c)

Single Replacement Reaction

d)

Double Replacement Reaction

e)

Combustion

53.

2 NH₃+ H₂SO₄ → (NH₄)₂SO₄

a)

Double Replacement Reaction

b)

Synthesis Reaction

c)

Single Replacement Reaction

d)

Decomposition Reaction

e)

Combustion

54.

4 C₅H₉O + 27 O₂ → 20 CO₂ + 18 H₂O

a)

Double Replacement Reaction

b)

Synthesis Reaction

c)

Single Replacement Reaction

d)

Decomposition Reaction

e)

Combustion

55.

Determine the type of chemical reaction:

(a)  

56.

Determine the type of chemical reaction:

(a)  

57.

Determine the type of chemical reaction:

(a)  

58.

Determine the type of chemical reaction:

(a)  

59.

Determine the type of chemical reaction ("A" is a fuel)

(a)  

60.

P₄ + 3 O₂ → 2 P₂O₃

a)

Double Replacement Reaction

b)

Synthesis Reaction

c)

Single Replacement Reaction

d)

Decomposition Reaction

e)

Combustion

61.

2 AgNO₃ + Cu → Cu(NO₃)₂ + 2 Ag

a)

Double Replacement Reaction

b)

Synthesis Reaction

c)

Single Replacement Reaction

d)

Decomposition Reaction

e)

Combustion

62.

3 Pb + 2 H₃PO₄ → 3 H₂ + Pb₃(PO₄)₂

a)

Double Replacement Reaction

b)

Synthesis Reaction

c)

Single Replacement Reaction

d)

Decomposition Reaction

e)

Combustion

63.

2 MgI₂ + Mn(SO₃)₂ → 2 MgSO₃ + MnI₄

a)

Double Replacement Reaction

b)

Synthesis Reaction

c)

Single Replacement Reaction

d)

Decomposition Reaction

e)

Combustion

64.

2 Pb(NO₃)₂ → 2 PbO + 4 NO₂ + O₂

a)

Double Replacement Reaction

b)

Synthesis Reaction

c)

Single Replacement Reaction

d)

Decomposition Reaction

e)

Combustion

65.

2 RbNO₃ + BeF₂ → Be(NO₃)₂ + 2 RbF

a)

Double Replacement Reaction

b)

Synthesis Reaction

c)

Single Replacement Reaction

d)

Decomposition Reaction

e)

Combustion

66.

C₃H₆O + 4 O₂ → 3 CO₂ + 3 H₂O

a)

Double Replacement Reaction

b)

Synthesis Reaction

c)

Single Replacement Reaction

d)

Decomposition Reaction

e)

Combustion

67.

2 NO₂ → 2 O₂ + N₂

a)

Double Replacement Reaction

b)

Synthesis Reaction

c)

Single Replacement Reaction

d)

Decomposition Reaction

e)

Combustion

68.

2 C₆H₆ + 15 O₂ → 12 CO₂ + 6 H₂O

a)

Double Replacement Reaction

b)

Synthesis Reaction

c)

Single Replacement Reaction

d)

Decomposition Reaction

e)

Combustion

69.

CaCO₃ → CaO + CO₂

a)

Double Replacement Reaction

b)

Synthesis Reaction

c)

Single Replacement Reaction

d)

Decomposition Reaction

e)

Combustion

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