Journal Entry:

How do you determine enthalpy for the lab? Remember to use your units to help guide you...

Learning Intentions

• We will learn what calorimetery is and how it can be used to calculate the specific heat of an unknown substance and then identify the substance. 

• We will be able to design and interpret the results of an experiment in which calorimetry is used to determine the change in enthalpy of a chemical process at a constant pressure.

Closing Task:

You can analyze you data to address the challenge given.

Content Standards being covered:

Energy is transferred between systems either through heat transfer or through one system doing work on the other system. (EK 5.B.1)

Temperature is a measure of the average kinetic energy of atoms and molecules. (EK 5.A.1)

The process of kinetic energy transfer at the particulate scale is referred to in this course as heat transfer, and the spontaneous direction of the transfer is always from a hot to a cold body. (EK 5.A.2)

When two systems are in contact with each other and are otherwise isolated, the energy that comes out of one system is equal to the energy that does into the other system. The combined energy of the two systems remains fixed. Energy transfer can occur through either heat exchange or work. (EK 5.B.2)

Calorimetry is an experimental technique that is used to determine the heat exchange/transferred in a chemical system. (EK 5.B.4)