1. Chemical Reactions and Equations

A chemical equation is a symbolic way of representing a chemical reaction using the chemical formulas of reactants and products. It shows how substances change during a reaction and helps us understand what new substances are formed. For example, when magnesium burns in oxygen, it forms magnesium oxide, which can be written as a chemical equation.

In this lesson, students learn how to write and balance chemical equations according to the law of conservation of mass, which states that matter cannot be created or destroyed during a chemical reaction. The chapter also explains different types of chemical reactions such as combination, decomposition, displacement, and redox reactions. Understanding chemical equations helps students clearly describe and analyze the chemical changes that occur in everyday life and scientific processes. ⚗️