Topic P3 - Particle Model Of Matter Flashcards
1
Q
What is gas pressure caused by?
A
Particles colliding with a surface and exerting a net force on it
2
Q
What is internal energy?
A
The total energy stored by the particles that make up a system
3
Q
What is specific heat capacity?
A
The amount of energy required to raise the temperature of 1kg of a substance by 1°C
4
Q
Latent heat
A
The energy need to change the stat of a substance
5
Q
Specific latent heat
A
Amount of energy needed to change 1 kg of a substance from one state to another, without changing temperature
6
Q
What happened in melting and boiling?
A
Bonds are broken
Internal energy increases
Temperature stays the same
7
Q
WhT happened in condensing and freezing
A
Stronger bonds form between particles
Internal energy decreases
Temperature stays the same
