The Physics of Thermodynamics

21 Questions covering topics 3.4 to 3.6 of the HL physics syllabus. Requires knowledge of the thermodynamics of a gas as well as the equations which define their possible transformations and changes in entropy.

?
Absolute zero is the theoretical temperature at which...?
The kinetic energy of the molecules of gas is zero
1 of 14
The relationship between pressure and volume at a constant temperature is...
Not linearly related
2 of 14
In an isobaric gas transformation...?
A constant pressure is maintained
3 of 14
In an isothermal gas transformation...?
A constant temperature is maintained
4 of 14
In an isochoric gas transformation...?
A constant volume is maintained
5 of 14
In an adiabatic gas transformation...?
Pressure, volume and temperature all vary during the transformation
6 of 14
In real gases at extremely high pressures...?
The kinetic model no longer applies because the forces between the molecules are no longer negligible
7 of 14
The internal energy of an ideal gas is...?
The sum of all the kinetic energy of all the molecules in the gas
8 of 14
The zeroth law of thermodynamics states that...? (where T1, T2 and T3 are temperatures of bodies)
If T1 = T2 and T2 = T3 then T1 = T3
9 of 14
The first law of thermodynamics states...? (Where Q is the heat added (J), ΔU is the internal energy of the gas (J) and W is the work done by the gas (J))
Q = ΔU + W
10 of 14
The work done by a gas in a cylindrical piston is given by the equation...? (Where W.D is the work done (J), P is the pressure (kPa), A is the area of the piston (m^2) and Δd is the displacement of the cylinder (m))
W.D = PAΔd
11 of 14
The Carnot Cycle consists of only...?
Isothermal and adiabatic changes
12 of 14
What is meant by the term Entropy?
Entropy is the tendency of all processes to cause an increase in disordered (dispersed) energy
13 of 14
The second law of thermodynamics states that...?
It is impossible to convert heat completely into work since entropy is always increasing
14 of 14

Other cards in this set

Card 2

Front

The relationship between pressure and volume at a constant temperature is...

Back

Not linearly related

Card 3

Front

In an isobaric gas transformation...?

Back

Preview of the front of card 3

Card 4

Front

In an isothermal gas transformation...?

Back

Preview of the front of card 4

Card 5

Front

In an isochoric gas transformation...?

Back

Preview of the front of card 5
View more cards

Comments

Mrs Jones

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A great resource thank-you - and a very good test of your recall and understanding.

I suggest printing out the flash cards and adding your own graphs. (from your teacher notes or textbook)

Teacher Top Tip - add the work done is the area enclosed (colour it in to make you remember) on the Carnot cycle pressure-volume graph for an ideal gas.

Check your understanding by doing the quiz.  A scrap of paper and pencil will be useful while doing the quiz to sketch graphs and rearrange equations.

To avoid the "easy mistake to make" - Put degrees celsius and kelvin on the same axes (line drawn across the page) when you need to convert so as not to be caught out

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