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9th class science-Matter in our surroundings

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In this article we will learn What is Matter? How do we classify Matter? – PowerPoint PPT presentation

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Title: 9th class science-Matter in our surroundings


1
Class 9th Science  Matter in our surroundings
2
Class 9th Science  Matter in our surroundings
  • Matter in our surroundings is the first Chapter
    of Class 9th 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.
  • e.g ..

3
Class 9th Science  Matter in our surroundings
  • 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

4
Class 9th Science  Matter in our surroundings
  • 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.
  •  

5
Class 9th Science  Matter in our surroundings
  • 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
  • Or Call Us 8800999280/8800999284/011-45639131
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