CBSE Class 9 Science – Matter in Our Surroundings

Chapter Overview

Matter exists in different states: solid, liquid, and gas. The behavior of matter depends on temperature and pressure. This chapter discusses the physical properties of matter, phase changes, and real-life applications of these concepts.

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Important Keywords

Matter: Anything that has mass and occupies space.
Solid: A state of matter with fixed shape and volume.
Liquid: A state of matter with a fixed volume but no fixed shape.
Gas: A state of matter with neither fixed shape nor fixed volume.
Evaporation: The process of a liquid turning into vapor.
Condensation: The process of gas turning into a liquid.
Sublimation: The process of a solid changing directly into a gas.

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Detailed Notes

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Important Facts

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Quick Revision

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Real Life Connection

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Comparison Table

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Frequently Asked Questions (FAQs)

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Learning Objectives

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