Chemistry in Everyday Life — Class 12 Chemistry (Samacheer Kalvi)
TN State Board (Samacheer Kalvi) Class 12 Chemistry, Chapter 15. Drugs, detergents, polymers and food additives.
1. About this chapter
This chapter covers Chemistry in Everyday Life as part of the Class 12 Samacheer Kalvi Chemistry curriculum. It deals with drugs, detergents, polymers and food additives and builds conceptual understanding essential for the TN HSC Public Exam.
By the end of this chapter, students will be able to:
- Describe types and uses of drugs and detergents
- Explain classification of polymers
2. Key concepts
- Concept 1: Describe types and uses of drugs and detergents.
- Concept 2: Explain classification of polymers.
3. Important terms and formulas
| Term / Formula | Description |
|---|---|
| Describe types and uses… | Describe types and uses of drugs and detergents |
| Explain classification of polymers… | Explain classification of polymers |
4. Worked examples
Example 1. Applying a key concept from this chapter.
Solution: Identify the relevant principle → apply the formula or rule → state the answer with correct units.
Example 2. A typical exam-style question on chemistry in everyday life.
Solution: Break the problem into steps, use the appropriate formula and verify the answer.
5. Common mistakes
- Mistake: Skipping units or forgetting to state them. Fix: Always write units alongside every quantity and answer.
- Mistake: Confusing similar terms or concepts in this chapter. Fix: Make a comparison table of the terms during revision.
6. Practice (exam-style)
- Define the main term or principle covered in Chapter 15.
- Give two real-life examples related to chemistry in everyday life.
- Solve a short numerical or descriptive question from this chapter.
- State one important formula and explain each symbol.
7. Answer key (hints)
- Refer to section 2 (Key concepts) above for the definition.
- Examples should be drawn from daily experience and local context.
- Apply the formula from section 3, show all steps clearly.
- Formula with units — refer to the textbook glossary for symbol meanings.
8. Quick revision
- Class 12 Chemistry — Chapter 15: Chemistry in Everyday Life.
- Core idea: Drugs, detergents, polymers and food additives.
- Key outcomes: Describe types and uses of drugs and detergents; Explain classification of polymers.
- Always revise diagrams / tables from the Samacheer Kalvi textbook before the exam.
