Balancing Chemical Equations

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has the same number of each type of atom on both sides of the equation, reflecting the Law of Conservation of Mass.

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 balance a chemical equation?

Back

To balance a chemical equation, adjust the coefficients of the reactants and products to ensure that the number of atoms of each element is the same on both sides.

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 and are used to balance the equation.

Front

What does it mean if a reaction is not balanced?

Back

If a reaction is not balanced, it violates the Law of Conservation of Mass, indicating that the number of atoms of at least one element is different on the reactant and product sides.

Front

What is the balanced equation for the reaction of lithium and chlorine?

Back

2Li + Cl2 -> 2LiCl.

Front

How many atoms of hydrogen are in 2(NH4)3PO4?

Back

There are 24 hydrogen atoms in 2(NH4)3PO4.

Front

What is the balanced equation for the reaction of calcium and copper(II) fluoride?

Back

Ca + CuF2 -> CaF2 + Cu is balanced.

Front

What is the right ratio of chemicals for the reaction FeCl3 + Ca(OH)2 -> Fe(OH)3 + CaCl2?

Back

The right ratio is 2,3 -> 2,3.

Front

What is the first step in balancing a chemical equation?

Back

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