Kinetic particle model of matter Flashcards
1
Q
What is the kinetic particle model of matter
A
Kinetic particle model of matter states that all matter is made up of tiny particles in constant random motion
2
Q
Define Brownian motion
A
Brownian motion is the continuous, random motion of particles suspended in a liquid or gas, as a result of bombardment by fast moving particles
3
Q
Describe solids
A
- Very closely packed in regular arrangement
- Particles have least energy
- Particles vibrate about fixed positions
- Held in fixed positions by strong forces of attraction between particles
3
Q
Describe liquids
A
- Closely packed in random arrangement
- Particles slide over one another freely
3
Q
Describe gases
A
- Far apart in random arrangement
- Particles have most energy
- Particles move freely in any direction
- Negligible forces of attraction between particles
4
Q
What happens when volume decreases
A
- Particles collide with container walls more frequently
- Pressure increases
4
Q
How is pressure on internal container walls produced
A
- Gas particles move randomly and collide with container walls
- Force exerted on walls is pressure
5
Q
What happens when temperature increases
A
- Average particle speed increases
- Particles collide with container walls more forcefully and more frequently
