1. Thermal Energy
What is Thermal Energy? What makes something warm vs. cold?
Review the Kinetic Molecular Theory of Matter

2. Three Methods of Heat Transfer:
Thermal energy: kinetic energy of the particles of a substance due to their constant, random motion.
Heat:
Three Methods of Heat Transfer: 1 2. 3.

3. Three Methods of Heat Transfer:
Thermal energy: kinetic energy of the particles of a substance due to their constant, random motion.
Heat: transfer of thermal energy fast-moving particles colliding with slower-moving ones
Three Methods of Heat Transfer:
1. Conduction
2. Convection
3. Radiation

4. Heat and Temperature
Temperature (T): A measure of the average kinetic energy of the particles of a substance
Celsius (C): Anders Celsius used the freezing and boiling points of _________.
Kelvin (K): T(K) = William Thomson (Lord Kelvin) theoretically devised absolute zero - substance has zero kinetic energy, no movement of particles.
Fahrenheit (F): Daniel Fahrenheit used the lowest temperature of an ________ bath to be zero.
Ex. Pg. 276 #23
Ex. What are some methods of transferring heat between objects?
- Conduction
- Convection
- Radiation
Ex. What heats up faster, a piece of copper or glass? Why?

5. Heat and Temperature
Temperature (T): A measure of the average kinetic energy of the particles of a substance
Celsius (C): Anders Celsius used the freezing and boiling points of water.
Kelvin (K): T(K) = T(C) C William Thomson (Lord Kelvin) theoretically devised absolute zero - substance has zero kinetic energy, no movement of particles.
Fahrenheit (F): Daniel Fahrenheit used the lowest temperature of an ice-salt bath to be zero.
Ex. Pg. 276 #23
Ex. What are some methods of transferring heat between objects?
- Conduction
- Convection
- Radiation
Ex. What heats up faster, a piece of copper or glass? Why?

6. Specific Heat Capacity

7. Specific Heat Capacity
Specific heat capacity, c, is the amount of heat energy that is needed to increase the temperature of 1 kg of a particular substance by 1°C.
Units (J/kg°C)
Pg 260

8. Heat Transfer
Dependence on: - Temperature difference (∆T) - Mass of substance (m) - Type of substance (c)
The amount of energy absorbed/lost when a mass m changes in temperature by T is:
Ex. Pg. 276 #24, 29

9. Heat Transfer
Dependence on: - Temperature difference (∆T) - Mass of substance (m) - Type of substance (c)
The amount of energy absorbed/lost when a mass m changes in temperature by T is:
Ex. Pg. 276 #24, 29

10. A 0. 50 kg block of iron at 80. 0°C is cooled by removing 2
A 0.50 kg block of iron at 80.0°C is cooled by removing 2.28 x104 J of heat energy. What will the final temperature of the metal be?