| Lesson Plan |
| Grade: Year 9 |
Date: 25/02/2026 |
| Subject: Chemistry |
| Lesson Topic: Classify oxides as acidic, including $\\mathrm{SO}_2$ and $\\mathrm{CO}_2$, or basic, including $\\mathrm{CuO}$ and $\\mathrm{CaO}$, related to metallic and non-metallic character |
Learning Objective/s:
- Classify common oxides as acidic, basic or amphoteric using metallic character as a guide.
- Write balanced equations for the reactions of acidic and basic oxides with water and with acids or bases.
- Explain how periodic trends in electronegativity and metallic character determine oxide behaviour.
- Predict the type of oxide for a given element and justify the prediction.
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Materials Needed:
- Projector and screen
- Whiteboard and markers
- Printed worksheet with oxide tables
- Periodic‑table handouts highlighting metallic character
- Cards showing oxide formulas (e.g., $\\mathrm{SO_2}$, $\\mathrm{CuO}$)
- Kahoot quiz access (or similar) for quick check
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Introduction:
Begin with a short video clip of volcanic gas fumes to spark curiosity about oxides. Ask students what they already know about acids and bases in everyday life, then state that today they will link oxide behaviour to an element’s metallic or non‑metallic character. Success will be measured by correctly classifying oxides and writing their reaction equations.
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Lesson Structure:
- Do‑now (5'): Students sort a mixed list of oxide formulas into “acidic”, “basic” or “unknown”.
- Mini‑lecture (10'): Explain metallic character trends and how they predict oxide type; show periodic‑table strip.
- Demonstration (5'): React $\\mathrm{SO_2}$ with water in a beaker to form $\\mathrm{H_2SO_3}$, highlighting acidic behaviour.
- Group activity (10'): Using oxide cards, each group writes the balanced reactions with water and with a suitable acid or base.
- Guided practice (10'): Complete worksheet tables for $\\mathrm{CO_2}$, $\\mathrm{CuO}$, $\\mathrm{CaO}$ and an amphoteric oxide.
- Quick check (5'): Kahoot quiz on classification and reaction equations.
- Exit ticket (5'): One‑sentence summary of how metallic character influences oxide acidity/basicity.
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Conclusion:
Recap the link between an element’s position in the periodic table and the nature of its oxide, reinforcing the key reaction patterns. Collect exit tickets and use them to gauge understanding. For homework, assign students to research an oxide not covered in class and write its reactions with water and a strong acid or base.
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