Balancing Equations

Front

What is the total mass of the reactants compared to the total mass of the products at the end of a chemical reaction?

Back

The mass is the same.

Front

Which elements are not balanced in the equation: LiNO3 + CaBr2 --> Ca(NO3)2 + LiBr?

Back

O and N.

Front

What does the Law of Conservation of Mass state?

Back

Matter cannot be gained or lost in a chemical reaction.

Front

What is a coefficient in a chemical equation?

Back

The large number to the left of a formula.

Front

Is the equation Mg + Cl2 --> MgCl2 balanced?

Back

Already balanced.

Front

What is the purpose of balancing chemical equations?

Back

To ensure that the same number of each type of atom is present on both sides of the equation.

Front

What does it mean if a chemical equation is unbalanced?

Back

It indicates that the Law of Conservation of Mass is not being followed.

Front

How do you determine if an equation is balanced?

Back

By counting the number of atoms of each element on both sides of the equation.

Front

What is the significance of the coefficients in a balanced equation?

Back

They indicate the relative amounts of reactants and products involved in the reaction.

Front

What is a reactant in a chemical reaction?

Back

A substance that undergoes change during the reaction.