MMMATTERATTERATTER INININ O O OURURUR S S …

As we look at our surroundings, we see a largevariety of things with different shapes, sizesand textures. Everything in this universe ismade up of material which scientists havenamed matter . The air we breathe, the foodwe eat, stones, clouds, stars, plants andanimals, even a small drop of water or aparticle of sand every thing is matter. Wecan also see as we look around that all thethings mentioned above occupy space andhave mass. In other words, they have bothmass* and volume**.Since early times, human beings havebeen trying to understand their Indian philosophers classified matter inthe form of five basic elements the Panch Tatva air, earth, fire, sky and to them everything, living or non- living , was made up of these five basicelements.

According to them everything, living or non-living, was made up of these five basic elements. Ancient Greek philosophers had arrived at a similar classification of matter. Modern day scientists have evolved two types of classification of matter based on their physical properties and chemical nature. In this chapter we shall learn about

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