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Changes Around Us: Physical and Chemical — Study Plan

CBSE · Class 7 · Science

A step-by-step study plan for Changes Around Us: Physical and Chemical, CBSE Class 7 Science: what to learn first, what to practise and when to revise.

42 questions60 flashcards5 concepts

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Study Plan

1
Day 1–2

Learn the Theory

Read the textbook chapter carefully. Note down definitions, formulas and key ideas. Focus on: 1. Types of Changes, 2. Examples of Physical and Chemical Changes, 3. Chemical Change Indicators.

2
Day 3

Practise

Solve the textbook exercises and extra practice questions. There are 42 questions available for this chapter.

3
Day 4

Revise & Test

Revise key points without looking at your notes. Take a practice quiz and mark weak areas for another pass.

4
Day 7

Spaced Revision

Come back to Changes Around Us: Physical and Chemical after a week. Use flashcards for quick recall and try past exam questions on this chapter.

What to Focus On

  • Changes can be seen, smelled, touched, heard, or tasted.
  • Some changes affect only appearance.
  • Some changes produce new substances.
  • No new substance is formed in a physical change.
  • Shape, size, or state may change.
  • Some physical changes can be reversed.
  • New substances are formed in a chemical change.
  • Chemical changes happen through chemical reactions.
  • Gas formation, heat, light, colour change, or deposit formation may be signs.

Common Mistakes to Avoid

Any change in appearance is a physical change.

Rusting is only a surface colour change, so it is a physical change.

Burning a candle is completely a chemical change.

Memory Tips

Physical change definition

Chemical change definition

Lime water test for carbon dioxide

Reaction of lime water with carbon dioxide

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Frequently Asked Questions

What are the important topics in Changes Around Us: Physical and Chemical for CBSE Class 7 Science?
Key topics in Changes Around Us: Physical and Chemical include Types of Changes, Examples of Physical and Chemical Changes, Chemical Change Indicators, Combustion and Fire Triangle. Study these first, then practise questions on each for Class 7 exams.
How should I revise Changes Around Us: Physical and Chemical for Class 7 exams?
Learn the core ideas first, then work through the 42 practice questions on Changes Around Us: Physical and Chemical. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Changes Around Us: Physical and Chemical

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