Chemical_Reactions_and_Equations_with_Endothermic_Exothermic_and_Images.pptx

Rs Kumar

1. Chemical Reactions and Equations Understanding the Basics

2. What are Chemical Reactions? Definition: A process that involves rearrangement of the molecular or ionic structure of a substance. Importance: Basis of all chemical processes in nature and industry.

3. Types of Chemical Reactions - Synthesis (Combination) Reaction - Decomposition Reaction - Single Displacement (Replacement) Reaction - Double Displacement (Replacement) Reaction - Combustion Reaction

4. Synthesis Reactions General Form: A + B → AB Example: 2H₂ + O₂ → 2H₂O Image: Synthesis Reaction

5. Decomposition Reactions General Form: AB → A + B Example: 2H₂O → 2H₂ + O₂ Image: Decomposition Reaction

6. Single Displacement Reactions General Form: A + BC → AC + B Example: Zn + 2HCl → ZnCl₂ + H₂ Image: Single Displacement Reaction

7. Double Displacement Reactions General Form: AB + CD → AD + CB Example: AgNO₃ + NaCl → AgCl + NaNO₃ Image: Double Displacement Reaction

8. Combustion Reactions General Form: Hydrocarbon + O₂ → CO₂ + H₂O Example: CH₄ + 2O₂ → CO₂ + 2H₂O Image: Combustion Reaction

9. Endothermic Reactions Definition: Reactions that absorb energy from the surroundings. Example: Photosynthesis Equation: 6CO₂ + 6H₂O + energy → C₆H₁₂O₆ + 6O₂ Image: Endothermic Reaction

10. Exothermic Reactions Definition: Reactions that release energy to the surroundings. Example: Combustion of methane Equation: CH₄ + 2O₂ → CO₂ + 2H₂O + energy Image: Exothermic Reaction

11. Balancing Chemical Equations - Law of Conservation of Mass - Steps to Balance Equations Image: Balancing Equations

12. Steps to Balance Equations 1. Write the unbalanced equation. 2. Count atoms of each element. 3. Add coefficients to balance atoms. 4. Ensure the same number of atoms on both sides.

13. Practice Problems 1. Fe + O₂ → Fe₂O₃ 2. C₂H₆ + O₂ → CO₂ + H₂O

14. Applications of Chemical Reactions - Industrial Processes (e.g., manufacturing) - Biological Processes (e.g., respiration) - Environmental Processes (e.g., decomposition) Image: Applications

15. Conclusion - Recap the importance of understanding chemical reactions and equations. - Encourage further study and experimentation.

16. Questions and Answers

17. References List any sources or textbooks used in the presentation.