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WorksheetsBalancing equations
Total questions: 20
Worksheet time: 19mins
Name
Class
Date
1.
Number of C's in 2Na₂CO₃
a)
1
b)
2
c)
3
d)
5
2.
The number of Na's in Na₂CO₃
a)
1
b)
2
c)
3
d)
6
3.
How many Elements are in the compound C2H8O ?
a)
2
b)
1
c)
3
d)
0
4.
How many total atoms are in the compound C2H8O ?
a)
11
b)
2
c)
8
d)
1
5.
How many total atoms are in the compound C2H8O ?
a)
11
b)
2
c)
8
d)
1
6.
How many Aluminum are in Al2O3?
a)
3
b)
2
c)
5
7.
How many Magnesium are in 10MgCl2?
a)
10
b)
5
c)
20
8.
How many atoms are there TOTAL in:
H2SO4
H2SO4
a)
6
b)
5
c)
7
d)
3
9.
How many atoms of Hydrogen are in this compound
a)
1
b)
2
c)
3
d)
4
10.
Balance this equation:
2Li + Cl2 -> LiCl
2Li + Cl2 -> LiCl
a)
2Li + Cl2 -> 4LiCl2
b)
2Li + Cl2 -> LiCl2
c)
2Li + Cl2 -> 2LiCl
11.
The substances listed on the left side of a chemical equation are the
a)
Products
b)
Coefficients
c)
Precipitates
d)
Reactants
12.
In chemical reactions, what does the principle of conservation of mass mean?
a)
Matter is not created or destroyed.
b)
The total mass of the reactants is greater than the total mass of the products.
c)
The total mass of the reactants is less than the total mass of the products.
d)
Matter is not changed.
13.
Name the part in red:
H2 + O2 -> H2O
H2 + O2 -> H2O
a)
Coefficient
b)
Product
c)
Yield
d)
Subscript
14.
Name the part in red:
H2 + O2 -> H2O
H2 + O2 -> H2O
a)
Coefficient
b)
Product
c)
Reactant
d)
Subscript
15.
Name the part in red:
H2 + O2 -> H2O
H2 + O2 -> H2O
a)
Coefficient
b)
Product
c)
Reactant
d)
Subscript
16.
Which number should go in the blank?
_ H2 + O2 -> 2 H2O
_ H2 + O2 -> 2 H2O
a)
1
b)
2
c)
3
d)
0
17.
Is the following equation balanced or unbalanced ?
Al + O2 --> Al2O3
Al + O2 --> Al2O3
a)
Balanced
b)
Unbalanced
18.
How many hydrogens are in 4H2O?
a)
6
b)
8
c)
2
d)
4
19.
Read the following chemical formula: C6H12O6. How many hydrogen atoms are in the formula?
a)
12
b)
6
c)
4
20.
What are the coefficient used to balance the equation below?
__Ag2O →__ Ag +___O2
__Ag2O →__ Ag +___O2
a)
2,4,1
b)
1,1,1
c)
2,1,2
d)
2,2,2
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