Chapter 10- Specific Heat Capacity

Question 1

Thermal equilibrium def

Answer 1

A system is in thermal
Equilibrium if it is radiating energy at the same rate as it is absorbing energy

System will then have a constant temperature

Question 2

Heat def

Answer 2

The FLOW of energy

Energy always flows from a hot object to a cold object

Question 3

Temperature

Answer 3

The measure of the average kinetic energy of vibrating atoms

Mean, random kinetic energy of the vibrating atoms of a body

Question 4

Internal energy def

Answer 4

The sum of the kinetic and bond potential energies of the molecules of a system

Question 5

Internal energy eq

Answer 5

U= KE of random molecular motion + PE (of the bonds)

Question 6

How to get from degrees to kelvin

Answer 6

+ 273 to the degrees

Question 7

What is 0 kelvin

Answer 7

The temperature at which particles of the system have zero kinetic energy

Question 8

Three ways of thermal energy transfer

Answer 8

Conduction
Convection
Radiation

Question 9

Specific heat capacity def

Answer 9

The amount of energy that is required to raise the temperature of 1kg of a substance by 1 kelvin

Question 10

Specific heat capacity eq

Answer 10

E= mC🔺T

C- specific heat capacity (Jkg^-1K^-1)
E- change in energy (J)
m- mass (kg)
T- Change in temperature (K)