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Study Materials BYJU'S Answer ScholarshipBTC Buy a Course Success Stories Login CBSE NotesCBSE Notes For Class 9Class 9 Science NotesChapter 1: Matter In Our Surroundings Top Banner Matter In Our Surroundings Class 9 Notes - Chapter 1 CBSE Class 9 Science Notes Chapter 1 Matter In Our ...

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1. CBSE Notes
2. CBSE Notes For Class 9
3. Class 9 Science Notes
4. Chapter 1: Matter In Our Surroundings




Matter In Our Surroundings Class 9
Notes - Chapter 1

CBSE Class 9 Science Notes Chapter 1
Matter In Our Surroundings
Anything that has mass and takes up space is referred to as matter. hydrogen and oxygen, sugar
and sand, air and water, etc. Small, minuscule particles make up matter. Due to the space
between them, matter particles are attracted to one another.

, States of Matter
 Matter can be classified as solid, liquid or gas on the basis of interparticle forces and the
arrangement of particles.
 These three forms of matter are interconvertible by increasing or decreasing pressure and
temperature. For example, ice can be converted from solid to a liquid by increasing the
temperature.

For more information on Matter Around Us, watch the
below video




1,83,259
To know more about the States of Matter, visit here.

Property Solid Liquid Gas


No fixed shape but has Neither definite shape nor
Shape and volume Fixed shape and volume
volume volume


Energy Lowest Medium Highest


Compressibility Difficult Nearly difficult Easy


Random and little sparsely Random and more sparsely
Arrangement of molecules Regular and closely arranged
arranged arranged


Fluidity Cannot flow Flows from higher to lower Flows in all directions

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