Worksheet Balancing Equations

HonorsChemistry  Name:___________________

WritingandBalancingEquationsWorksheet

STO.1

Balance a chemical equation.

STO.2

Identify the parts of a chemical equation.

RXN.1

Describe a chemical reaction using words and symbolic equations.

For each of the following problems, write complete chemical equations to describe the chemical

process taking place. Balance the equations.

1) When lithium hydroxide pellets are added to a solution of sulfuric acid (H

2

SO

4

), lithium

sulfate and water are formed.

2) Magnesium reacts with sodium fluoride to produce magnesium fluoride and elemental

sodium.

3) If a copper coil is placed into a solution of silver nitrate, silver crystals form and copper (I)

nitrate is generated.

4) When crystalline C

6

H

12

O

6

is burned in oxygen, carbon dioxide and water vapor are formed.

5) Calcium carbonate combines with hydrochloric acid (HCl) to produce calcium chloride,

water and carbon dioxide gas.

Balance the equations below:

1) ____ N

2

+ ____ H

2

 ____ NH

3

2) ____ KClO

3

 ____ KCl + ____ O

2

3) ____ NaCl + ____ F

2

 ____ NaF + ____ Cl

2

4) ____ H

2

+ ____ O

2

 ____ H

2

O

5) ____ Pb(OH)

2

+ ____ HCl  ____ H

2

O + ____ PbCl

2

6) ____ AlBr

3

+ ____ K

2

SO

4

 ____ KBr + ____ Al

2

(SO

4

)

3

7) ____ CH

4

+ ____ O

2

 ____ CO

2

+ ____ H

2

O

8) ____ C

3

H

8

+ ____ O

2

 ____ CO

2

+ ____ H

2

O

9) ____ C

8

H

18

+ ____ O

2

 ____ CO

2

+ ____ H

2

O

10) ____ FeCl

3

+ ____ NaOH  ____ Fe(OH)

3

+ ____NaCl

11) ____ P + ____O

2

 ____P

2

O

5

HonorsChemistry  Name:___________________

WritingandBalancingEquationsWorksheet

12) ____ Na + ____ H

2

O  ____ NaOH + ____H

2

13) ____ Ag

2

O  ____ Ag + ____O

2

14) ____ S

8

+ ____O

2

 ____ SO

3

15) ____ CO

2

+ ____ H

2

O  ____ C

6

H

12

O

6

+ ____O

2

16) ____ K + ____ MgBr

2

 ____ KBr + ____ Mg

17) ____ HCl + ____ CaCO

3

 ____ CaCl

2

+ ____H

2

O + ____ CO

2

18) ____ HNO

3

+ ____ NaHCO

3

 ____ NaNO

3

+ ____ H

2

O + ____ CO

2

19) ____ H

2

O + ____ O

2

 ____ H

2

O

2

20) ____ NaBr + ____ CaF

2

 ____ NaF + ____ CaBr

2

21) ____ H

2

SO

4

+ ____ NaNO

2

 ____ HNO

2

+ ____ Na

2

SO

4

Word Equations

Write the word equations below as chemical equations and balance:

1) Zinc and lead (II) nitrate react to form zinc nitrate and lead.

2) Aluminum bromide and chlorine gas react to form aluminum chloride and bromine gas.

3) Sodium phosphate and calcium chloride react to form calcium phosphate and sodium

chloride.

4) Potassium metal and chlorine gas combine to form potassium chloride.

5) Aluminum and hydrochloric acid react to form aluminum chloride and hydrogen gas.

6) Calcium hydroxide and phosphoric acid react to form calcium phosphate and water.

7) Copper and sulfuric acid react to form copper (II) sulfate and water and sulfur dioxide.

8) Hydrogen gas and nitrogen monoxide react to form water and nitrogen gas.

HonorsChemistry  Name:___________________

WritingandBalancingEquationsWorksheet

Word Equations – Answer Key

1) Zinc and lead (II) nitrate react to form zinc nitrate and lead.

Zn + Pb(NO

3

)

2

 Zn(NO

3

)

2

+ Pb

_______________________________________________________________

2) Aluminum bromide and chlorine gas react to form aluminum chloride and bromine gas.

2 AlBr

3

+ 3 Cl

2

 2 AlCl

3

+ 3 Br

2

_______________________________________________________________

3) Sodium phosphate and calcium chloride react to form calcium phosphate and sodium

chloride.

2 Na

3

PO

4

+ 3 CaCl

2

 6 NaCl + Ca

3

(PO

4

)

2

_______________________________________________________________

4) Potassium metal and chlorine gas combine to form potassium chloride.

2 K + Cl

2

 2 KCl

_______________________________________________________________

5) Aluminum and hydrochloric acid react to form aluminum chloride and hydrogen gas.

2 Al + 6 HCl  3 H

2

+ 2 AlCl

3

_______________________________________________________________

6) Calcium hydroxide and phosphoric acid react to form calcium phosphate and water.

3 Ca(OH)

2

+ 2 H

3

PO

4

 Ca

3

(PO

4

)

2

+ 6 H

2

O

_______________________________________________________________

7) Copper and sulfuric acid react to form copper (II) sulfate and water and sulfur dioxide.

Cu + 2 H

2

SO

4

 CuSO

4

+ 2 H

2

O + SO

2

_______________________________________________________________

8) Hydrogen gas and nitrogen monoxide react to form water and nitrogen gas.

2 H

2

+ 2 NO  2 H

2

O + N

2

HonorsChemistry  Name:___________________

WritingandBalancingEquationsWorksheet

Balancing Chemical Equations – Answer Key

Balance the equations below:

1) 1 N

2

+ 3 H

2

 2 NH

3

2) 2 KClO

3

 2 KCl + 3 O

2

3) 2 NaCl + 1 F

2

 2 NaF + 1 Cl

2

4) 2 H

2

+ 1 O

2

 2 H

2

O

5) 1 Pb(OH)

2

+ 2 HCl  2 H

2

O + 1 PbCl

2

6) 2 AlBr

3

+ 3 K

2

SO

4

 6 KBr + 1 Al

2

(SO

4

)

3

7) 1 CH

4

+ 2 O

2

 1 CO

2

+ 2 H

2

O

8) 1 C

3

H

8

+ 5 O

2

 3 CO

2

+ 4 H

2

O

9) 2 C

8

H

18

+ 25 O

2

 16 CO

2

+ 18 H

2

O

10) 1 FeCl

3

+ 3 NaOH  1 Fe(OH)

3

+ 3 NaCl

11) 4 P + 5 O

2

 2 P

2

O

5

12) 2 Na + 2 H

2

O  2 NaOH + 1 H

2

13) 2 Ag

2

O  4 Ag + 1 O

2

14) 1 S

8

+ 12 O

2

 8 SO

3

15) 6 CO

2

+ 6 H

2

O  1 C

6

H

12

O

6

+ 6 O

2

16) 1 K + 1 MgBr  1 KBr + 1 Mg

17) 2 HCl + 1 CaCO

3

 1 CaCl

2

+ 1 H

2

O + 1 CO

2

18) 1 HNO

3

+ 1 NaHCO

3

 1 NaNO

3

+ 1 H

2

O + 1 CO

2

19) 2 H

2

O + 1 O

2

 2 H

2

O

2

20) 2 NaBr + 1 CaF

2

 2 NaF + 1 CaBr

2

21) 1 H

2

SO

4

+ 2 NaNO

2

 2 HNO

2

+ 1 Na

2

SO

4