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Summary CHEMICAL EQUATION
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Introduction to Chemical Reactions and EquationsIn our daily lives, we observe numerous changes around us, from food turning sour to rust
forming on iron and much more. These changes, where the chemical nature of substances is
altered, are known as chemical changes. Chemical changes occur due to chemical reactions. In
this article, we will explore examples of chemical reactions, understand how to represent them
through chemical equations, learn to balance those equations, and delve into various types of
reactions.
Characteristics of Chemical Reactions
Chemical reactions are identified through several observable changes:
- Change in state
- Change in color
- Evolution of gas
- Change in temperature
These characteristics help us recognize when a chemical reaction has occurred.
Chemical Equations
Chemical equations are a concise way to express what happens in a chemical reaction. Let's
break down the components involved:
1. **Reactants & Products**: The starting materials in a reaction are called reactants, and the
substances formed are called products.
2. **Representation**: Reactants are written on the left side and products on the right side,
separated by an arrow that indicates the direction of the reaction.
Word Equations
A word equation simplistically describes a chemical reaction. For instance:
- Magnesium + Oxygen → Magnesium Oxide
Chemical Formulas-
Representing the elements with their chemical symbols provides a more precise equation:
- Mg (Magnesium) + O₂ (Oxygen) → MgO (Magnesium Oxide)
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