TOPIC 2 - U1 - Particle nature of matter Flashcards
1
Q
What is the kinetic particle theory
A
- Particles have energy, therefore
- particles move randomly
- there are spaces between the particles
- there are forces between particles - Attractive forces
- Repulsive forces
2
Q
When do repulsive forces react
A
only play a role when particles are forced together
3
Q
What is sublimation
A
sub. changes directly from a solid to a gas
4
Q
What is deposition
A
sub. changes directly from a gas to a solid
5
Q
Evaporation
A
sub. changing from a liq to a gas
6
Q
Melting
A
sub. changes from a solid to a liq
7
Q
What is freezing
A
sub. changes from a liq to a solid
8
Q
What is condensation
A
sub. changes from a gas to a liq
9
Q
Def: Diffusion
A
Spontaneous movement of particles
10
Q
Factors that affect the rate of diffusion
A
- Temperature - hotter the faster
-Phase - liquids diffuse faster than solids - Bigger heavier particles - diffuse slower than
smaller lighter particles
11
Q
Def: Brownian movement
A
Erratic movement of solid particles suspended in a liquid or gas
