Ms. Whitley's Balancing Chemical Equations

Types of Chemical Reactions

100

Na + Cl --> NaCl

Synthesis

200

H₂O --> H₂ + O₂

Decomposition 

300

CH₄ + O₂ --> CO₂ + H₂O

Combustion

400

NaBr + KCl --> KBr + NaCl

Double displacement (replacement)

500

Na + KCl --> NaCl + K

Single displacement (replacement)

Balancing Equations Level 1

100

____ KI + ____ F₂ --> ____ KF + ____ I₂

2 KI + F₂ --> 2 KF + I₂

200

____ NaBr + ____ Cl₂ --> ____ NaCl + ____ Br₂

2 NaBr + Cl₂ --> 2 NaCl + Br₂

300

____ P + ____ O₂ --> ____ P₂O₅

4 P + 5 O₂ --> 2 P₂O₅

400

____ C₃H₈ + ____ O₂ --> ____ CO₂ + ____ H₂O

C₃H₈ + 5 O₂ --> 3 CO₂ + 4 H₂O

500

____ S₈ + ____ O₂ --> ____ SO₃

S₈ + 12 O₂ --> 8 SO₃

Balancing Equations Level 2

100

____ Na + ____ Cl₂ --> ____ NaCl

2 Na + ____ Cl₂ --> 2 NaCl

200

____ Ag₂O --> ____ Ag + ____ O₂

2 Ag₂O --> 4 Ag + O₂

300

____ K + ____ MgBr --> ____ KBr + ____ Mg

 K + MgBr --> KBr + Mg

400

____ CH₄ + ____ Cl₂ --> ____ CCl₄ + ____HCl

CH₄ + 4 Cl₂ --> CCl₄ + 4 HCl

500

___ HNO₃ + ___ NaHCO₃ --> ___ NaNO₃ + ___ H₂O + ___ CO₂

HNO₃ + NaHCO₃ --> NaNO₃ + H₂O + CO₂

Balancing Equations Level 3

100

____ LiBr --> ____ Li + ____ Br₂

2 LiBr --> 2 Li + ____ Br₂

200

____ H₂O + ____ O₂ --> ____ H₂O₂

2 H₂O + O₂ --> 2 H₂O₂

300

____ KClO₃ --> ____ KCl + ____ O₂

2 KClO₃ --> 2 KCl + 3 O₂

400

____ Na + ____ H₂O --> ____ NaOH + ____ H₂

2 Na + 2 H₂O --> 2 NaOH + ____ H₂

500

____ FeCl₃ + ____ NaOH --> ____ Fe(OH)₃ + ____ NaCl

FeCl₃ + 3 NaOH --> Fe(OH)₃ + 3 NaCl

Balancing Equations Level 4

100

____ H₂ + ____ O₂ --> ____ H₂O

2 H₂ + O₂ --> 2 H₂O

200

____ CH₄ + _____ O₂ --> ____ CO₂ + ____ H₂O

CH₄ + 2 O₂ --> CO₂ + 2 H₂O

300

____ SiO₂ + ____ HF --> ____ SiF₄ + ____ H₂O

SiO₂ + 4 HF --> SiF₄ + 2 H₂O

400

____ Pb(OH)₂ + ____ HCl --> ____ H₂O + ____ PbCl₂

 Pb(OH)₂ + 2 HCl --> 2 H₂O + PbCl₂

500

____ FeO₃ + ____ CO --> ____ Fe + ____ CO₂

FeO₃ + 3 CO --> Fe + 3 CO₂