In this post, let’s talk about what’s tested in kinetic model of matter for O Level Physics.
p/s: If you are taking O Level Chemistry as well, you would learn some parts of this chapter in Chemistry.
Below, is a checklist of what’s tested in kinetic model of matter.
Checklist for kinetic model of matter for O Level Physics
- properties and molecular structure of solids, liquids and gases
solids: fixed volume and shape. Solid particles are held tightly together, and vibrate about the fixed position.
liquids: fixed volume but no fixed shape. Liquid particles are free to move about within the liquid, and are held together by moderately strong forces of attraction.
gases: no fixed volume and no fixed shape. Gas particles are free to move apart, and far apart and weakly held together.
- Brownian motion experiment
In Brownian motion, the smoke particles are seen moving randomly, in a haphazard manner. This is due to the air molecules colliding with the smoke particles randomly and in all directions.
- Motion of gas particles as temperature increases
As temperature of gas increases, average kinetic energy of gas particles increases.
- Explain pressure of gas molecules
Pressure of gas is due to the collision of gas molecules with the walls of container.
- Relationship and solve problems between pressure, volume and pressure of gas
For a fixed mass of ideal gas, pV/T = constant (where P is pressure, V is volume and T is temperature in Kelvins)