Internal Energy Flashcards
1
Q
Energy Stored by Particles of a Substance is Called the Substance’s ____________ Energy.
A
Internal.
2
Q
Internal Energy of the Particles is the Sum of:
A
- Kinetic Energy they have Due to their Individual Motions Relative to Each Other.
- Potential Energy they have Due to their Individual Positions Relative to Each Other.
3
Q
Internal Energy doesn’t Include Gravitational ____________ Energy or the Kinetic Energy that’s Caused by the ___________ of the Whole Substance.
A
Potential…Motion…
4
Q
Heating a Substance Changes the ___________ Energy of the Substance by Increasing the Energy of its ____________.
A
Internal…Particles…
5
Q
When the Temperature of a Substance ______________, the Total Kinetic Energy of its Particles Increases.
A
Increases.
6
Q
When the Physical State of a Substance Changes, the Total Potential ___________ of its Particles Changes.
A
Energy.
7
Q
Features of Solids:
A
- There are Strong Forces of Attraction Between Particles.
- Each Particle Vibrates.
- When a Solid is Heated, the Particles’ Energy Stores Increase and they Vibrate More.
8
Q
Features of Liquids:
A
- Forces of Attraction are Strong Enough to Stop the Particles Moving Away From Each Other.
- When a Liquid is Heated, Some of the Particles Gain Enough Energy to Break Away From Other Particles.
9
Q
Features of Gases:
A
- Particles Move About at High Speed in Random Directions.
- The Pressure of a Gas on a Solid Surface is Caused by the Force of Impacts.
- When a Gas is Heated, its Particles Gain Kinetic Energy and on Average Move Faster.
