PHY2: PARTICULATE NATURE OF MATTER

This Unit is about matter and everything that goes with it.

PARTICULATE NATURE OF MATTER

This is a phenomenon which states that matter is made up of particulars

Matter exists in three states;-

  1. Solids
  2. Liquids
  3. Gases

Differences between liquids solids and gases

  • Molecules of solids are very close and the force of attraction is very strong.
  • Molecules of solids vibrate in one position.
  • Molecules of liquids are further apart than those of solids. liquid molecules move from one position to another within the liquid.
  • Gas molecules are for apart and move freely in all directions.

radiation 3

KINETIC THEORY OF MATTER

Matter is made up of small particles called atoms or molecules. The molecules are in can star rapid motion or vibration. The higher the temperature the faster the motion of the molecules.

BROWNIAN MOTION

Brownian motion is the hap hazards movement of molecules or it is the rapid movement of molecules in all directions.

radiation 4

The glass cell is filled with smoke using a smoldering straw and is covered with a thin glass lid. The glass cell is put under the microscope for observation as indicated in the diagram.

Observation

Bright specs of light moving random only and very fast are observed through the microscopes.

These are small particles which are strongly illuminated by the source of light. Particles are in constant motion because they are colliding with fast moving air particles.

Conclusion

The above experience proves that matter is made up of particles that are in constant motion.

THE KINETIC THEORY OF MATTER IS EXPLAINED BETTER IN THIS VIDEO.

 

ASSIGNMENT : PARTICULATE NATURE OF MATTER assignment MARKS : 10  DURATION : 1 week, 3 days

 

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