Chemical Equations Review Lesson

Chemical Equations Review

Multiple Choice

Identify the reactants in the chemical equation: 2H2 + O2 -> 2H2O

• H2O + O2

• 2H2O

• 2H2 + O2

• 2O2

Multiple Choice

Identify the products in the chemical equation: CH4 + 2O2 -> CO2 + 2H2O

• C and H2O

• CO2 and 2H2O

• CO2 and H2O

• CH4 and O2

Multiple Choice

Identify the reactants in the chemical equation: Fe + O2 -> Fe2O3

• Fe + O2

• Fe2O3 + O2

• Fe2O3 + Fe

• O2 + O2

Multiple Choice

Identify the products in the chemical equation: 2H2O -> 2H2 + O2

• H2O and H2

• H2 and O

• 2H and 2O

• 2H2 and O2

Multiple Choice

Identify the reactants in the chemical equation: 2Na + 2H2O -> 2NaOH + H2

• 2H2O + 2NaCl

• H2O + NaCl

• 2Na + 2H2O

• 2Na + O2

Multiple Choice

Balance the chemical equation: H2 + O2 -> H2O

• H2 + O2 -> 2H2O

• H2 + O2 -> H2O2

• H2O2 -> H2 + O2

• H2O -> H2 + O2

Multiple Choice

Balance the chemical equation: Al + O2 -> Al2O3

• Al + O2 -> AlO2

• Al + O2 -> Al3O2

• Al + O2 -> AlO3

• Al + 3O2 -> 2Al2O3

Multiple Choice

Balance the chemical equation: N2 + H2 -> NH3

• N2 + 2H2 -> NH3

• N2 + 4H2 -> 3NH3

• N2 + 3H2 -> 2NH3

• N2 + H2 -> NH2

Multiple Choice

Balance the chemical equation: C3H8 + O2 -> CO2 + H2O

• C3H8 + 3O2 -> 3CO2 + 4H2O

• C3H8 + 5O2 -> 3CO2 + 4H2O

• C3H8 + 5O2 -> 2CO2 + 4H2O

• C3H8 + 4O2 -> 3CO2 + 4H2O

Multiple Choice

Balance the chemical equation: Fe + HCl -> FeCl2 + H2

• Fe + 3HCl -> FeCl3 + H2

• Fe + 4HCl -> FeCl4 + H2

• Fe + 2HCl -> FeCl2 + H2

• 2Fe + 6HCl -> 2FeCl2 + H2

Multiple Choice

What is the coefficient of O2 in the balanced chemical equation: 2H2 + O2 -> 2H2O

• 1

• 2

• 3

• 4

Multiple Choice

What is the coefficient of CO2 in the balanced chemical equation: CH4 + 2O2 -> CO2 + 2H2O

• 3

• 2

• 4

• 1

Multiple Choice

What is the coefficient of HCl in the balanced chemical equation: Fe + 2HCl -> FeCl2 + H2

• 4

• 2

• 3

• 1

Multiple Choice

What is the coefficient of NaOH in the balanced chemical equation: 2Na + 2H2O -> 2NaOH + H2

• 1

• 2

• 4

• 3

Multiple Choice

How many Fe (iron) atoms are in Fe₂(SO₄)₃?

• 2

• 4

• 6

• 8