Exo- and Endo-thermic Processes
Initial Publication Date: August 3, 2009
Summary
In this chemistry lab, students will investigate two reactions and answer questions relating to exothermic and endothermic reactions.
CollapseLearning Goals
Students will be able to identify a process as endothermic or exothermic based on the reaction in class and definitions in the textbook.
Context for Use
This is a 50 minute lab where students will run two experiments and identify the process as endothermic or exothermic. They will then answer questions relating to these processes and attempt to identify some other processes. This lab could be adapted to include chemical formulas and energy arguments.
Description and Teaching Materials
Students will mix sulfuric acid and water, and ammonium nitrate and water. They will measure the temperature changes and decide what sort of process is taking place.
Exo-Endo thermic Processes (Microsoft Word 41kB Aug3 09)
Exo-Endo thermic Processes (Microsoft Word 41kB Aug3 09)
Teaching Notes and Tips
Students should be warned of the risks of spilling acid and using ammonia. Also proper disposal techniques should be mentioned. Safety glasses must be used as well as lab aprons.
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Assessment
Students will be assessed based on their answers to the worksheet.
Standards
9.2.1.2.4