Worksheet #1: Writing and Balancing Formula Equations
Step 1: Write each formula and balance each formula using SUBSCRIPTS.
Step 2: Balance the overall equation using coefficients.
1.
sulfur
+
2.
zinc
3.
hydrogen
+
nitrogen
Æ
ammonia
4.
hydrogen
+
chlorine
Æ
hydrogen chloride
5.
carbon
6.
calcium oxide
7.
phosphorus
8.
hydrochloric acid
9.
barium chloride
10.
aluminum sulfate + calcium hydroxide Æ aluminum hydroxide + calcium sulfate
11.
ethane (C2H6)
12.
aluminum oxide
+
oxygen
sulfuric acid
+
water
water
oxygen
+
Æ
Æ
Æ
hydrogen
+
hydrogen
calcium hydroxide
diphosphorus pentoxide
sulfuric acid
oxygen
+
carbon monoxide
sodium hydroxide
+
+
zinc sulfate
Æ
Æ
+
+
sulfur dioxide
Æ
Æ
aluminum
Æ
Æ
sodium chloride
barium sulfate
carbon dioxide
+
oxygen
+
+
water
+
water
hydrochloric acid
Worksheet #1: Writing and Balancing Formula Equations
1.
sulfur + oxygen Æ sulfur dioxide
S8
2.
zinc
+
+
sulfuric acid
Zn
3.
hydrogen
+
hydrogen
+
5.
carbon
+
7.
carbon monoxide
+
CO
H2
H2O
+
CaO
+
+
oxygen
diphosphorus pentoxide
Æ
+
sodium hydroxide
sulfuric acid
+
2P2O5
Æ
NaOH
+
H2SO4
NaCl
Æ
Æ
sodium chloride
Æ
water
H2O
barium sulfate
BaSO4
Æ
+
+
+
hydrochloric acid
2HCl
aluminum sulfate + calcium hydroxide Æ aluminum hydroxide + calcium sulfate
ethane (C2H6)
+
aluminum oxide
+
3Ca(OH)2
oxygen
2C2H6
12.
Ca(OH)2
Æ
5O2
+
hydrogen
calcium hydroxide
Æ
H2O
+
+
hydrochloric acid
barium chloride
2HCl
Æ
water
Al2(SO4)3
11.
hydrogen chloride
Æ
Æ
BaCl2
10.
2NH3
Æ
water
HCl
9.
N2
+
H2
ammonia
Æ
P4
8.
+
Cl2
calcium oxide
phosphorus
hydrogen
+
C
6.
+
ZnSO4
Æ
Æ
chlorine
H2
zinc sulfate
H2SO4
nitrogen
+
8SO2
Æ
Æ
+
3H2
4.
8O2
Æ
2Al2O3
+
Æ
7O2
4Al
2Al(OH)3
carbon dioxide
4CO2
Æ
aluminum
Æ
Æ
+
+
oxygen
3O2
+
+
+
water
6H2O
3CaSO4