Balancing Chemical Equations

Front

What is a chemical equation?

Back

A chemical equation is a symbolic representation of a chemical reaction, showing the reactants and products along with their quantities.

Front

What does it mean to balance a chemical equation?

Back

Balancing a chemical equation means ensuring that the number of atoms of each element is the same on both sides of the equation.

Front

What is the Law of Conservation of Mass?

Back

The Law of Conservation of Mass states that matter cannot be created or destroyed in a chemical reaction.

Front

How do you determine the total number of atoms in a compound?

Back

To find the total number of atoms in a compound, multiply the subscript of each element by the number of molecules and sum them up.

Front

What is a reactant in a chemical reaction?

Back

A reactant is a substance that undergoes change during a chemical reaction.

Front

What is a product in a chemical reaction?

Back

A product is a substance that is formed as a result of a chemical reaction.

Front

How do you balance the equation: ___ H2 + ___ O2 → ___ H2O?

Back

The balanced equation is 2 H2 + 1 O2 → 2 H2O.

Front

What is the significance of coefficients in a chemical equation?

Back

Coefficients indicate the number of molecules or moles of a substance involved in the reaction.

Front

What does it mean if an equation is balanced?

Back

If an equation is balanced, it means that the number of atoms for each element is equal on both sides of the equation.

Front

What is the first step in balancing a chemical equation?

Back

The first step is to write down the unbalanced equation and count the number of atoms of each element.