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SC10 CHEM Quiz - Balancing Eqns

Total questions: 18

Worksheet time: 31mins

Name
Class
Date
1.
What is the part of the chemical equation in green called? 
Fe + S --> FeS
a)
products
b)
reactants
c)
yield
d)
chemical formula
2.
What coefficient should be used to make the following equation balanced?
N2+O2--> _NO 
a)
1
b)
2
c)
3
d)
4
3.
Balance this chemical reaction......?  
__H2O2 ---->  __H2O + O2
a)
2H2O2  //  2H2O
b)
1H2O2  //  2H2O
c)
2H2O2  //  1H2O
d)
H2O2  //  2H2O
4.

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

5.
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
6.

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

7.

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

8.
What is the total number of atoms present in 5Na3PO4
a)
5
b)
40
c)
55
d)
8
9.
The numbers needed to balance the equation are:
a)
2, 7, 6, 4
b)
2, 1, 3, 2
c)
1, 1, 3, 2
d)
2, 3, 1, 3
10.
The numbers needed to balance the equation are:
a)
2, 7, 6, 4
b)
2, 1, 3, 2
c)
3, 1, 1, 3
d)
2, 3, 1, 3
11.
The numbers needed to balance the equation are:
a)
1, 1, 1, 2
b)
1, 1, 2, 2
c)
1, 1, 1, 1
d)
2, 3, 1, 3
12.
Which number should go in the blank?
Al(NO3)3 + _  NaOH -> Al(OH)3 + 3 NaNO3
a)
1
b)
2
c)
3
d)
0
13.

Determine the coefficients to balance the 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

14.
Which of the following equations are correctly balanced?
a)
12CO2 +H2O --> C6H12O6 + O2
b)
CO2 + 9H2O --> C6H12O6 + O2
c)
CO2 + H2O --> 3C6H12O6 + O2
d)
6CO2 + 6H2O --> C6H12O6 + 6O2
15.
The numbers needed to balance the equation are:
a)
2, 7, 6, 4
b)
2, 3, 2, 6
c)
4, 3, 1, 12
d)
1, 6, 2, 6
16.

Balance the following chemical equation:

C2H6 + O2 --> CO2 + H2O

(a)  

17.

What are the coefficients that would properly balance this equation?

C3H8 + O2 --> CO2 + H2O

(a)  

18.

Balanced this equation:

Sb2S3 + O2 ---> Sb + SO2

(a)  

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