CBSE Class 9CBSE
Share
Notifications

View all notifications

Physical Nature of Matter

Login
Create free account


      Forgot password?

description

  • Matter is Made up of Particles
  • How Small Are These Particles of Matter?

notes

  • Physical nature of Matter:
  • Matter is made up of very small particles. These small particles are called atoms.
  • These particles cannot be seen by a naked eye, as they are too small in size.
  • Atoms can be observed under electron microscope.

 

  • Diffusion:
    Particles of matter intermix on their own with each other. They do so by getting into the spaces between the particles. This intermixing of particles of two different types of matter on their own is called diffusion.

  • Brownian Motion: The random or zig-zag movement of microscopic particles in a fluid, as a result of continuous bombardment from molecules of the surrounding medium, is known as Brownian motion. For example: Dust moves randomly because the random moving particles of air collide with dust particles.
  •  
S
View in app×