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Revision Notes

Air

ICSE · Class 4 · Science

Quick revision notes for Air — ICSE Class 4 Science. Key concepts, formulas, and definitions for last-minute revision.

45 questions38 flashcards5 concepts

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Key Topics to Revise

1

Matter and States of Matter

  • Matter is anything that has mass and takes up space.
  • There are three states of matter: solid, liquid, and gas.
  • Air is a gas and has no definite shape or volume.
2

Properties of Air

  • Air occupies space — shown by the glass-and-water experiment.
  • Air has weight — proven by balancing inflated and deflated balloons on a scale.
  • Air expands on heating — hot air rises and fills balloons.
3

Composition of Air

  • Air is a mixture of gases: mainly nitrogen (78%), oxygen (21%), and carbon dioxide (0.04%).
  • Air also contains water vapour, dust particles, smoke, and germs.
  • Oxygen is essential for breathing and burning.
4

Uses of Air

  • Living things need oxygen in air to breathe.
  • Air helps in burning — things burn in presence of oxygen.
  • Air is used to fill tyres, balloons, and footballs.

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Full Notes

Key Concepts

Matter is anything that takes upAir has no fixed shapeAir is a mixture of gasesLiving things need oxygen in airAir pollution happens when harmful substances

Frequently Asked Questions

What are the important topics in Air for ICSE Class 4 Science?
Air covers several key topics that are frequently asked in ICSE Class 4 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Air — ICSE Class 4 Science?
Understand the core concepts first, then work through the 45 practice questions available for this chapter. Revise formulas and 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.

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