# Balanced Equations

## Basic Concept

• A chemical equation represents a chemical reaction using the chemical formulas of the reactants and products involved.
• In a balanced equation, the number of each type of atom on the reactant side (left-hand side) is the same as the number of each type of atom on the product side (right-hand side).
• Achieving a balanced equation obeys the principle of conservation of mass, which states that matter can neither be created nor destroyed in a chemical reaction.
• Substances are symbolised by their chemical formulas, and the number of molecules is represented by coefficients in front of these chemical formulas.

## Balancing Equations: Step-by-step

• Identify all the atoms involved in the chemical reaction using the given chemical formulas.
• Count the number of each type of atom in the reactants and products.
• Adjust the numbers by placing coefficients in front of the chemical formulas so that the number of atoms for each element is the same on both sides of the equation.
• Remember that the subscript values within the chemical formulas must not be changed as they indicate the composition of the molecules, not the quantity.
• Check your work - re-count the atoms to make sure that it balances out, and remember to multiply the coefficient with the subscript to get the total number of a certain atom in a molecule.

## Real-world Applications

• Balanced equations play a vital role in many areas of science and engineering, such as medicine, environmental science, and chemical manufacturing.
• They help scientists understand the quantities of reactants needed and products produced, optimize reactions and reduce waste in industrial chemical processes.
• A precise understanding of balanced equations is essential for researchers and professionals working in these areas to make accurate predictions and achieve desired results.

Studying balanced equations lays the groundwork for more complex topics such as stoichiometry, thermochemistry, and kinetics. Understanding this principle is crucial in the field of applied science.