Different Definitions of Acids

Prompt for Motion App — Different Definitions of Acids Create an engaging, visually rich Class 10 Chemistry lesson titled “Different Definitions of Acids.” Explain the three important concepts of acids in a simple, step-by-step manner: 1. Arrhenius Definition of Acid Explain that according to Arrhenius, an acid is a substance that produces H⁺ ions in aqueous solution. Use examples: HCl → H⁺ + Cl⁻ H₂SO₄ → 2H⁺ + SO₄²⁻ Show an animation of acid molecules dissolving in water and producing H⁺ ions. 2. Brønsted–Lowry Definition of Acid Explain that according to Brønsted–Lowry, an acid is a proton (H⁺) donor. Demonstrate: HCl + H₂O → H₃O⁺ + Cl⁻ Clearly show H⁺ moving from HCl to H₂O and explain that HCl donates a proton, so HCl is the acid. Introduce the terms: Proton donor Proton acceptor Conjugate acid Conjugate base 3. Lewis Definition of Acid Explain that according to Lewis, an acid is a substance that accepts an electron pair. Demonstrate a simple Lewis acid-base reaction, such as: BF₃ + NH₃ → BF₃←NH₃ Show NH₃ donating an electron pair to BF₃. Comparison Create a clear comparison table: Arrhenius → Produces H⁺ in water Brønsted–Lowry → Proton donor Lewis → Electron-pair acceptor Explain how the three definitions are related and how the Brønsted–Lowry and Lewis definitions are broader than the Arrhenius definition. Include animated molecular diagrams, electron-pair movement, labelled equations, simple examples, and colour-coded explanations. Keep the content scientifically accurate and appropriate for Class 10/CBSE-NCERT students. End with 5 interactive MCQs testing all three definitions, with answers and short explanations. Make the lesson suitable for a 20–25 minute classroom/video lesson.