Balancing Equations
Color-by-Number
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#
Question Balanced Unbalanced
1
Al + O
2
→ Al
2
O
3
Color BLUE Color LIGHT GREEN
2
Na + H
2
O → NaOH + H
2
Color PURPLE Color LIGHT GREEN
3
C
2
H
6
+ O
2
→ CO
2
+ H
2
O
Color RED Color BLUE
4
NiCO
3
→ NiO + CO
2
Color ORANGE Color PINK
5
C
3
H
8
O
3
+ O
2
→ CO
2
+ H
2
O
Color YELLOW Color LIGHT GREEN
6
N
2
O
5
+ H
2
O → HNO
3
Color DARK BLUE Color LIGHT PURPLE
7
HCl + Ca(OH)
2
→ CaCl
2
+ H
2
O
Color PINK Color LIGHT GREEN
8
Zn + AgNO
3
→ Zn(NO
3
)
2
+ Ag
Color DARK PURPLE Color BLUE
9
Mg + O
2
→ MgO
Color BROWN Color ORANGE
10
NH
4
NO
3
→ N
2
O + H
2
O
Color BLUE Color WHITE
11
Mg + LiNO
3
→ Mg(NO
3
)
2
+ Li
Color RED Color LIGHT GREEN
12
Cu + FeSO
4
→ CuSO
4
+ Fe
Color LIGHT GREEN Color DARK PINK
13
C
6
H
6
+ O
2
→ CO
2
+ H
2
O
Color YELLOW Color ORANGE
14
Ag
2
O → Ag + O
2
Color LIGHT PURPLE Color LIGHT BLUE
15
KOH + H
3
PO
4
→ K
3
PO
4
+ H
2
O
Color WHITE Color BLUE
16
BaCl
2
+ K
2
CO
3
→ BaCO
3
+ KCl
Color RED Color BLUE
17
CH
3
OH + O
2
→ CO
2
+ H
2
O
Color PINK Color BLUE
18
H
2
O
2
→ H
2
O + O
2
Color YELLOW Color DARK PURPLE
19
Mg + Zn(NO
3
)
2
→ Mg(NO
3
)
2
+ Zn
Color LIGHT GREEN Color LIGHT BLUE
20
K + Cl
2
→ KCl
Color WHITE Color ORANGE
Name: ___________________________________
Directions: Determine whether the following equations are balanced or unbalanced. Shade in the answer box with
the color given & then color the picture on the next page accordingly. *If the color is white, just circle the answer.
© Science Chick 2016
Balancing Equations
#
Question Balanced Unbalanced
1
Al + O
2
→ Al
2
O
3
Color BLUE Color LIGHT GREEN
2
Na + H
2
O → NaOH + H
2
Color PURPLE Color LIGHT GREEN
3
C
2
H
6
+ O
2
→ CO
2
+ H
2
O
Color RED Color BLUE
4
NiCO
3
→ NiO + CO
2
Color ORANGE Color PINK
5
C
3
H
8
O
3
+ O
2
→ CO
2
+ H
2
O
Color YELLOW Color LIGHT GREEN
6
N
2
O
5
+ H
2
O → HNO
3
Color DARK BLUE Color LIGHT PURPLE
7
HCl + Ca(OH)
2
→ CaCl
2
+ H
2
O
Color PINK Color LIGHT GREEN
8
Zn + AgNO
3
→ Zn(NO
3
)
2
+ Ag
Color DARK PURPLE Color BLUE
9
Mg + O
2
→ MgO
Color BROWN Color ORANGE
10
NH
4
NO
3
→ N
2
O + H
2
O
Color BLUE Color WHITE
11
Mg + LiNO
3
→ Mg(NO
3
)
2
+ Li
Color RED Color LIGHT GREEN
12
Cu + FeSO
4
→ CuSO
4
+ Fe
Color LIGHT GREEN Color DARK PINK
13
C
6
H
6
+ O
2
→ CO
2
+ H
2
O
Color YELLOW Color ORANGE
14
Ag
2
O → Ag + O
2
Color LIGHT PURPLE Color LIGHT BLUE
15
KOH + H
3
PO
4
→ K
3
PO
4
+ H
2
O
Color WHITE Color BLUE
16
BaCl
2
+ K
2
CO
3
→ BaCO
3
+ KCl
Color RED Color BLUE
17
CH
3
OH + O
2
→ CO
2
+ H
2
O
Color PINK Color BLUE
18
H
2
O
2
→ H
2
O + O
2
Color YELLOW Color DARK PURPLE
19
Mg + Zn(NO
3
)
2
→ Mg(NO
3
)
2
+ Zn
Color LIGHT GREEN Color LIGHT BLUE
20
K + Cl
2
→ KCl
Color WHITE Color ORANGE
Name: ___________________________________
Directions: Determine whether the following equations are balanced or unbalanced. Shade in the answer box with
the color given & then color the picture on the next page accordingly. *If the color is white, just circle the answer.
© Science Chick 2016
Balancing Equations
Answer Key
1
1
1
1
1
2
2
2
2
2
5
5
6
6
6
6
6
6
7
7
7
7
7
7
7
8
8
8
8
9
9
9
9
10
11
11
11
11
12
12
12
12
12
12
12
12
12
13
13
13
13
13
13
13
14
14
14
14
14
14
14
14
14
14
14
15
17
17
15
17
15
17
16
16
16
16
18
18
18
18
18
19
19
19
19
20
20
8
8
8
8
14
3
3
3
3
16
16
16
5
1 1
1
1
1
1
1
1
1
1
7
7
7
7
7
13 13
1
1
1
1
2
2
2
2
2
5
5
6
6
6
6
6
6
7
7
7
7
7
7
7
7
8
8
8
8
9
9
9
9
10
11
11
11
11
11
11
11
12
12
12
12
12
12
12
12
12
13
13
13
13
13
13
13
14
14
14
14
14
14
14
14
14
14
14
15
17
15
17
15
17
15
17
16
16
16
16
18
18
18
18
18
18
18
19
19
19
19
20
20
8
8
8
8
14
3
3
3
3
16
16
16
5
1 1
1
1
1
1
1
1
1
1
7
7
7
7
7
13 13
Answer Key
