NCERT & CBSE Class 9 Science Matter in our surroundings
Matter in our surroundings is the first Chapter of Class 9 science and one of the very interesting chapter.
What is Matter? How do we classify Matter? These are the first question that strikes in the mind of a ‘Class 9th science’ student.
So if we have to define Matter we will say:-
“Matter is anything which occupies space and has mass”.
So, anything that we see, feel, touch around us is matter. A major requirement for anything to be categorized as a matter is that it should occupy space and have mass.
On the basis of physical and chemical properties, Matter is classified as below
Characteristics of Particle of Matter
- Matter Particles are very very small-Gulaal particles are very small even if we drop a pinch of gulaal in a drum, entire water colour changes, hence we can say that the particles of matter are very very small.
- Matter Particles have space between them-If we take a glass of water and dissolve a spoon of sugar, then the water level will not change, this shows that there are spaces between water particles in which sugar particles accommodates.
- Matter Particles are constantly moving-If we light an incense stick in one room than the fragrance spreads to other rooms as well, hence we can say that matter particles are moving constantly.
- Matter Particles attract each other-If we will try to break sugar cube and iron nail with force. Sugar cube, will break easily; iron nail will not break even after applying force. This shows that the force of attraction is very strong.
Note :- Force of attraction is maximum in the solid particles and minimum in the gaseous particles.
Animated lectures on Matter of Class 9 is available at Takshila Learning. For NCERT Solutions for Class 9 and CBSE question paper for Class 9, kindly visit www.takshilalearning.com
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