Thermal Physics A2 Flashcards Preview

Physics A-Level > Thermal Physics A2 > Flashcards

Flashcards in Thermal Physics A2 Deck (12)
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1
Q

What is internal energy

A

The sum of the randomly distributed kinetic energies and potential energies of the particles in a body

2
Q

What is the first law of thermodynamics

A

Energy can be transformed from one form to another, but can be neither created nor destroyed

3
Q

What causes the internal energy to increase

A

When heat is transferred to it or work is done on it

4
Q

What occurs to the thermal energy of the substance during the change of state

A

Stays constant as the energy produced from the breaking of bonds is equal to the energy transferred to the substance during heating

5
Q

What is specific heat capacity

A

E=mcT

6
Q

What is specific latent heat

A

E=ml

7
Q

What is specific latent heat used for

A

The energy transferred while the substance changes state

8
Q

What is absolute zero

A

-273 Celsius or 0K, where the the particles have 0 energy

9
Q

What is the relationship between pressure and volume

A

Inverse proportion

10
Q

What is the relationship between pressure and temperature

A

Direct proportion

11
Q

What is the relationship between volume and temperature

A

Direct proportion

12
Q

What is brownian motion

A

The random movement of small particulates in a fluid due to particles colliding off them