Journal Entry:
Several people are stranded on a cold, remote, deserted
island with only the clothes on their backs. They must stay warm and
purify some water to drink. One of the first tasks they all agree on is to
try to build a fire.
1. How could the survivors go about starting a fire? 2.
What is fire? Describe it. 3. What makes fire hot?
Learning Intentions
- We will learn how to define energy
- We will learn what an exothermic reaction is.
- We will learn how to describe fire.
Closing Task:
You can
give an example of an exothermic reaction and explain how you know it is
exothermic.
Content Standards being covered in this unit:
Student can identify types of energy and explain energy changes.
Students can create a computational model to calculate the change in the energy
of one component in a system when the change in energy of the other component(s)
and energy flows in and out of the system are known (HS-PS3-1 and CCC Energy and
Matter)
Students can develop a model to illustrate that the release or absorption of
energy from a chemical reaction system depends upon the changes in total bond
energy.(HS-PS1-4 and CCC Energy and Matter) .
Students can develop and use models to illustrate that energy at the macroscopic
scale can be accounted for as a combination of energy associated with the
motions of particles (objects) and energy associated with the relative position
of particles (objects).(HS-PS3-2 and CCC Energy and Matter)
Students can plan and conduct an investigation to provide evidence that the
transfer of thermal energy when two components of different temperature are
combined within a closed system results in a more uniform energy distribution
among the components in the system (second law of thermodynamics) (HS-PS3-4 and
CCC Energy and Matter)