Chemical Equation Balance

What is the process of balancing a chemical equation with coefficients?

• Adjust the coefficients of the reactants and products to balance the number of each type of atom on both sides of the equation.

• Removing all coefficients from the equation

• Adding more reactants to the equation

• Doubling the number of products

In a chemical equation, what are the substances to the left of the arrow called?

• Catalysts

• Reactants

• Products

• Intermediates

In a chemical equation, what are the substances to the right of the arrow called?

• products

• reactants

• ingredients

• solutions

Why is it important to balance chemical equations?

• To make the equations look more complicated

• To create confusion among students

• To waste time in chemistry class

• To ensure the law of conservation of mass is obeyed.

What does the Law of Conservation of Mass state in relation to chemical equations?

• Total mass of reactants > Total mass of products

• Total mass of reactants = Total mass of products

• Total mass of reactants < Total mass of products

• Total mass of reactants = Total mass of reactants

Balance the chemical equation: H2 + O2 -> H2O

• 2H2 + O -> H2O

• 2H2 + O2 -> 2H2O

• H2 + O2 -> H2O

• H2O -> H2 + O2

Balance the chemical equation: Fe + O2 -> Fe2O3

• Fe2O3 -> Fe + O2

• Fe + O2 -> FeO

• Fe2 + O3 -> Fe2O3

• 2Fe + 3O2 -> 2Fe2O3

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

• H2O + O2 -> H2

• 2H2 + 2O2 -> 2H2O

• Reactants: 2H2, O2; Products: 2H2O

• 2H2O + O2 -> 2H2

Identify the reactants and products in the chemical equation: NaCl + AgNO3 -> AgCl + NaNO3

• Reactants: NaCl, AgCl; Products: AgNO3, NaNO3

• Reactants: AgNO3, NaNO3; Products: NaCl, AgCl

• Reactants: NaCl, AgNO3; Products: AgCl, NaNO3

• Reactants: AgCl, NaNO3; Products: NaCl, AgNO3

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

• C3H8 + 4O2 -> 3CO2 + 4H2O

• C3H8 + O2 -> 2CO2 + 2H2O

• C3H8 + 6O2 -> 3CO2 + 4H2O

• C3H8 + 5O2 -> 3CO2 + 4H2O