⚗️ Chemical Reactions

Understanding Changes Around Us

🧪 What is a Chemical Reaction?
"When a chemical change occurs, we say that a chemical reaction has taken place. How do we know when this happens? Let's explore through interactive demonstrations!"
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Choose an activity below to explore chemical reactions
🔍 Observations
Chemical Equation
🎯 Interactive Activities
📚 Key Concepts & Theory
⚗️
What is a Chemical Reaction?

A chemical reaction is a process where one or more substances (reactants) are transformed into one or more different substances (products). During this process, chemical bonds are broken and new bonds are formed.

Key Point: The identity and properties of the original substances change completely.
🔍
Evidence of Chemical Reactions

We can identify chemical reactions by observing these signs:

  • Change in color: New substances often have different colors
  • Evolution of gas: Bubbles or gas formation
  • Change in temperature: Heat absorbed or released
  • Formation of precipitate: Solid particles in solution
  • Change in smell: New odors produced
📝
Writing Chemical Equations

Chemical equations are a concise way to represent chemical reactions using chemical formulas and symbols.

Reactants → Products
2Mg + O₂ → 2MgO
Remember: The arrow (→) shows the direction of the reaction from reactants to products.