Module 1

Module 1—Thinking Energy

Lesson Summary

In Lesson 2 you considered the following question:

• How is energy quantified?

You learned about calorimetry, which is an experimental technique used to measure energy transfers. You used the formula Q = mcΔt to calculate the energy gain or loss by a system in order to determine the energy content of foods. You also investigated the design of calorimeters. And you applied your understanding of the principles of energy transfer to the operation of a solar collector.

Lesson Glossary

calorimeter: an isolated system in which the chemical system being studied is surrounded by a known quantity of liquid

calorimetry: the technological process of measuring the energy changes of an isolated system