Download Thermal Energy Day 1 Matter Unit

Warm-up (9/15):
1. Is melting an endothermic or
exothermic process?
2. What about sublimation?
3. What does “endothermic” mean?
Day 2: Matter and Thermochemistry II
Focus: Heat and Energy Changes
Day 2: Matter and Thermochemistry II
Focus: Heat v. Temperature
I. Heat travels from a hotter object to a
colder object.
a. So, in the case of the flames behind
these words, describe the direction of
heat flow.
A: Heat travels from the flames to the surrounding space.
Day 2: Matter and Thermochemistry II
Focus: Heat v. Temperature
I. Heat travels from a hotter object to a
colder object.
b. Describe the heat flow during the
formation of ice in your freezer.
B: Heat travels from the liquid water to the freezer’s air.
Types of Heat Transfer
1. Radiation is when electromagnetic
waves directly transport energy
through space (ex. sunlight).
Types of Heat Transfer
2. Conduction is the transfer of
energy through matter from particle
to particle (ex. a beaker absorbs the
heat from a hot plate)
Types of Heat Transfer
3. Convection is the transfer of heat
by the actual movement of the
warmed matter (ex. steam rises from
hot soup)
Types of Heat Transfer
Law of Conservation of Energy
The Law of Conservation of Energy
states that energy cannot be created
nor destroyed; but it can be
transformed!
So when we apply heat to something, the
energy must be transformed in one of the
following ways…
Thermal energy can be
converted into:
Homework: page 8