Internal Energy Flashcards
1
Q
What are the characteristics of solid particles?
A
They can’t move, only vibrate.
2
Q
What is potential energy when referring to the movement of particles?
A
The intermolecular forces and chemical bonds of particles.
3
Q
What is internal energy?
A
The energy stored in a system by particles.
4
Q
What is the calculation for internal energy?
A
Kinetic energy + Potential energy.
5
Q
Does melting and boiling increase or decrease potential energy?
A
Increase.
6
Q
What kind of change is a change of state?
A
Physical.
7
Q
What is evaporation?
A
When a liquid changes into a gas but only on the surface of a liquid.
8
Q
Why does evaporation only occur on the surface of particles?
A
The particles on the surface are the only particles to have enough energy to change state.
