Thermal Concepts

Question 1

What is the Specific Heat capacity?

Answer 1

Amount of heat needed to raise the temperature of 1 kg of substance by 1K

Question 2

What is Q?

Answer 2

Heat or amount of energy added (J)

Question 3

What is m?

Answer 3

m = mass

Question 4

What is c?

Answer 4

Specific heat capacity (J kg^-1°K^-1)

Question 5

What is θ?

Answer 5

Temperature change (°C)

Question 6

What is L?

Answer 6

Specific latent heat ( J kg^-1)

Question 7

What is the formula for the amount of heat needed to raise the temperature of 1kg of substance by 1K?

Answer 7

c = Q / m∆T

Question 8

What is the formula for specific latent heat?

Answer 8

Q = mL
Where Q = heat (J)

Question 9

What is internal energy?

Answer 9

Sum of all random kinetic and mutual potential energies of the particles of the system (J)

Question 10

What is the formula for Internal Energy?

Answer 10

Et = Ek + Ep

Question 11

What is average kinetic energy?

Answer 11

Average amount of energy stared in each particle due to its motion. The faster it vibrates or moves, the more kinetic energy.

Question 12

What is potential energy?

Answer 12

Energy required to stretch intermolecular bonds (stored energy)

Question 13

What is temperature?

Answer 13

Measure of how hot or cold a substance is, average kinetic energy (°C or K)

Question 14

What is the formula for average kinetic Energy?

Answer 14

Ek = 3/2 kt

Question 15

What is k?

Answer 15

Boltzmann constant

Question 16

What is heat?

Answer 16

Transfer of energy from high to low temperature. Occurs until both objects are at thermal equilibrium.

Question 17

What is C?

Answer 17

C = thermal capacity (J K^-1)

Question 18

What are 2 formulas to find Q?

Answer 18

Q = mc∆T
Q = C∆T