Ex

  Chemistry (NTSE/Olympiad)  

1. Matter In Our Surrounding

Matter

Anything which occupies space and has mass is called matter.
Food, water, air, clothes, table, chair, plants and trees.
Indian philosophers said that all the matter living or non-living, was made up of five basic elements air, earth, fire, sky and water
On the basis of its physical properties and on the basis of its chemical properties.
On the basis of chemical properties the matter is classified as elements, compounds and mixtures.
Everything around us is made of tiny pieces or particles. The particles make up matter are atoms or molecules.
Characteristics of particles of matter:
The particles of matter are very, very small
The particles of matter have spaces between them
The particles of matter are constantly moving
The particles of matter attract each other

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