Journal Entry:

Imagine that you have a sample of 100g of water at 85oC. You place 100 g of ice at 0oC into the water.

1. Predict the final temperature from the choices given. Explain your choice.

    A: 80oC, B: 60oC, C: 42.5oC, D: 20oC, E: 5oC

2. Describe how you might measure the amount of heat required to melt the ice.


 

Learning Intentions

Closing Task:

You can describe phase changes.


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)