CBSE · Class 8 · Science · Chapter 7

Particulate Nature of Matter

Examine matter as particles and explore how particle motion and spacing explain solids, liquids, gases and changes of state.

6 lessons 40 min
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Lessons in this chapter

  1. 1Matter Is Made of Tiny ParticlesDiscover how chalk and sugar reveal the tiny building blocks of matter.
  2. 2Solids and MeltingUse the particle model to explain why solids keep their shape and how heating can melt them.
  3. 3Liquids, Gases, and FlowCompare how particles behave in liquids and gases, and connect that motion to boiling and flow.
  4. 4Spaces Between ParticlesInvestigate why air compresses easily and why dissolved substances can fit among water particles.
  5. 5Particles in MotionObserve particles spreading in water and air, then connect motion, heat, and the states of matter.
  6. 6Chapter Summary and PracticeConnect the whole particle model and practise explaining unfamiliar observations with it.
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