Yr 13 - Thermal Physics (1 of 2)

Question 1

Relationship Between Pressure and Boiling point

Answer 1

Pressure & Boiling point are proportional.

Question 2

Triple Point of water

Answer 2

Temperature & Pressure where all phases of matter exist at thermal equilibrium.

0.01 ℃ & 0.61KPa

Question 3

Formula between Celsius and Kelvin

Answer 3

T (K) = 𝞱 (℃) + 273

Question 4

Heating

Answer 4

Transfer of energy from a region of higher temperature to one of lower temperature.

Question 5

Does heat travel?

Answer 5

No, Object A heats Object B.

Question 6

Does an object have heat?

Answer 6

No, Object A heats object B causing energy to travel from A to B.

Question 7

Thermal Equilibrium

Answer 7

Where 2 or more regions have same temperature.
- Therefore, no heating occurs

Question 8

What are Solid, Liquid and gas called?

Answer 8

Phases of matter

Question 9

What are the 2 fixed points used to determine the Celsius scale?

Answer 9

Freezing and boiling point at one atmospheric pressure.

Question 10

What are the 2 fixed points used to determine the Absolute temperature scale?

Answer 10

Triple point of water and absolute zero

Question 11

△10K = ?

Answer 11

△10℃

Question 12

What remains constant during a change In phase?

Answer 12

Average Ke (therefore temperature).

Question 13

How to calculate internal energy?

Answer 13

Sum of Ek + Sum of Ep

Question 14

Whats the triple point of water?

Answer 14

0.01℃

• Where solid, liquid and gas can exist at the same time.

Question 15

What is the absolute temperature scale?
What is the thermodynamic temperature scale?

Answer 15

Both are the Kelvin scale.

Question 16

What does thermodynamic equilibrium mean?

Answer 16

No net heating occurs.

Question 17

What graph do you use to represent phase changes and heating?

Answer 17

Temperature (k) - Internal Energy

Question 18

What is heating?

Answer 18

Transferring energy from a region of higher temperature to one of lower temperature.

Question 19

What does ‘specific’ mean.

eg: specific heat capacity

Answer 19

Per unit mass

Question 20

What graph can you use to calculate the specific heat capacity.

Answer 20

Temperature Time

-> E = mc △𝞡
-> P = (mc△𝞡) / T
->P= mc x grad

(can just do △𝞡 / T as its the same thing)

Question 21

What is the latent heat when solid -> liquid

Answer 21

Latent heat of fusion

Question 22

What is the latent heat when liquid -> gas

Answer 22

latent heat of vaporisation

Question 23

What is latent heat?

Answer 23

Amount of energy per unit mass to change the phase of a substance while at a constant temperature.