Exothermic and Endothermic Reactions: This addresses NGSS PS1-6. Students will learn about exothermic and endothermic reactions and the engineering component. They will evaluate chemical reactions to determine if they are exothermic or endothermic. They will design and test a cold pack using one of the chemical reactions. Students will use engineering skills to engage in the design cycle and they will construct a solution.
NGSS MS PS1-6 Undertake a design project, engaging in the design cycle, to construct and/or implement a solution that meets specific design criteria and constraints test, and modify a device that either releases or absorbs thermal energy by chemical processes.*
This resource includes an informative slide show, two lab activities, a STEM engineering activity, a reading passage, response pages, and a quiz.
The materials for the labs include thermometers, hand warmers, glass jars, vinegar, baking soda, calcium chloride, ammonium chloride, and water.
The two chemicals listed can be purchased online from a science supply company. A link is included in terms of service.
For the engineering activity, students will need some ziplock baggies, tape, foil, and other easy-to-find household materials.
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