Thermochemistry

📖 About This Experiment

Thermochemistry is the study of energy changes during chemical reactions. This experiment visualizes exothermic reactions (which release energy, often as heat) and endothermic reactions (which absorb energy from surroundings). The energy diagram shows the activation energy barrier and enthalpy change.

💡 Key Concepts

• •Exothermic: Releases energy to surroundings (ΔH < 0)
• •Endothermic: Absorbs energy from surroundings (ΔH > 0)
• •Activation Energy (Ea): Minimum energy required for reaction
• •Enthalpy Change (ΔH): Heat energy change at constant pressure
• •Transition State: High-energy intermediate state during reaction

🔢 Key Formulas

🔬 Real-World Applications

• 1.Combustion: Burning fuels for energy (exothermic)
• 2.Respiration: Cellular energy production (exothermic)
• 3.Photosynthesis: Plants converting sunlight (endothermic)
• 4.Cold Packs: Instant cold therapy (endothermic)
• 5.Hand Warmers: Self-heating packs (exothermic)

⚙️ How to Use This Experiment

1. 1Select the Reaction Type (Exothermic or Endothermic)
2. 2Adjust the Activation Energy (energy barrier height)
3. 3Adjust the Enthalpy Change (energy difference)
4. 4Click "Start Reaction" to see the animation
5. 5Watch the energy diagram to visualize the reaction progress