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Physical and Chemical Changes — Concept Maps

ICSE · Class 7 · Chemistry

4 concept maps of Physical and Chemical Changes for ICSE Class 7 Chemistry, each also written out as a text outline.

45 questions30 flashcards5 formulas & key relations5 concepts

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A flowchart illustrating the processes by which matter changes from one state to another (solid, liquid, gas) and the conditions (temperature, pressure) that facilitate these changes.
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4 Concept Maps

Chapter Overview – Physical and Chemical Changes

Chapter Overview – Physical and Chemical Changes

The map in words

  • Changes in Matter
    • Types of Changes
      • Slow vs Fast
        • Slow: Rusting, Growth
        • Fast: Burning, Explosion
      • Natural vs Man-made
        • Natural: Seasons, Earthquake
        • Man-made: Cooking, Steel
      • Periodic vs Non-periodic
        • Periodic: Day-Night, Tides
        • Non-periodic: Floods, Illness
      • Desirable vs Undesirable
        • Desirable: Ripening, Cooking
        • Undesirable: Rusting, Rotting
      • Reversible vs Irreversible
        • Reversible: Melting Ice, Dissolving
        • Irreversible: Burning, Cooking
    • Physical Change
      • No new substance
      • Temporary change
      • Usually reversible
      • Examples
        • Melting of ice
        • Dissolving salt
        • Sublimation
        • Cutting paper
      • Key Terms
        • Melting and Freezing
        • Boiling and Condensation
        • Evaporation
        • Sublimation
    • Chemical Change
      • New substance formed
      • Permanent change
      • Energy always exchanged
      • Examples
        • Rusting of iron
        • Burning of paper
        • Respiration
        • Curd from milk
      • Indicators
        • Colour change
        • Gas evolved
        • Energy change
        • New substance

Mind map showing the classification of changes based on three criteria: time duration, origin, and frequency of occurrence.

Mind map showing the classification of changes based on three criteria: time duration, origin, and frequency of occurrence.

The map in words

  • Types of Changes
    • Based on Time
      • Fast Changes
        • Burning of paper
        • Explosion
      • Slow Changes
        • Rusting
        • Growth
    • Based on Origin
      • Natural
        • Day-night
        • Seasons
      • Man-made
        • Cooking
        • Construction
    • Based on Frequency
      • Periodic
        • Moon cycles
        • Tides
      • Non-periodic
        • Earthquakes
        • Accidents

Flowchart distinguishing between reversible and irreversible changes with examples.

Flowchart distinguishing between reversible and irreversible changes with examples.

The map in words

  • Change Occurs
    • Can Original Substance Be Recovered?
      • Yes: Reversible Change
        • Water to Ice
        • Stretching Band
      • No: Irreversible Change
        • Burning Paper
        • Cooking Food

Changes in matter can be classified as physical changes and chemical changes based on whether a new substance is formed, whether the change is temporary or permanent, and whether it can be reversed easily.

Changes in matter can be classified as physical changes and chemical changes based on whether a new substance is formed, whether the change is temporary or permanent, and whether it can be reversed easily.

The map in words

  • Changes in matter can be classified as physical changes and chemical changes based on whether a new substance is formed, whether the change is temporary or permanent, and whether it can be reversed easily.
    • Change in matter
    • Types of changes
    • Physical change
    • Chemical change
    • Reversible change
    • Irreversible change
    • Evaporation and boiling
    • Melting and freezing

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Frequently Asked Questions

What are the important topics in Physical and Chemical Changes for ICSE Class 7 Chemistry?
Key topics in Physical and Chemical Changes include Types of Changes, Physical Changes, Chemical Changes, Important Reactions and Examples. Study these first, then practise questions on each for Class 7 exams.
What do the concept maps for Physical and Chemical Changes show?
The 4 maps show how the ideas in Physical and Chemical Changes connect: Chapter Overview – Physical and Chemical Changes; Mind map showing the classification of changes based on three criteria: time duration, origin, and frequency of occurrence.. Each map is also written out as an outline on this page.
How should I revise Physical and Chemical Changes for Class 7 exams?
Learn the core ideas first, then work through the 45 practice questions on Physical and Chemical Changes. 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 Physical and Chemical Changes

All ICSE Class 7 Chemistry Concept Maps

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