Cookie Chemistry - Physical and Chemical Changes In Matter

Engage students in a simple 3D science storyline to explore and understand physical and chemical changes in matter. Students first experience a phenomenon (baking sugar cookies) to develop questions to drive their investigation forward. Then, they participate in lab activities to make observations on how the additional of thermal energy affects substances differently. The unit workbook reinforces and expands understanding following exploration activities.

Chemical Kitchen Anchor Phenomenon

Students will bake sugar cookies, following a recipe that substitutes only one ingredient. This activity lays the foundation for the case at hand -- an investigation into fundamental ideas about matter, its properties, and how it changes. Students will make observations in order to generate questions that will drive the storyline forward.

Thermal Energy and Physical and Chemical Changes In Matter

Students will investigate physical changes (phase changes, specifically) and chemical changes by observing what happens when thermal energy is added to each ingredient in a typical sugar cookie recipe. (This could be applied to other substances but the investigation is designed to support the Chemical Kitchen anchor phenomenon). By observing how water boils and evaporates, how eggs harden, how sugar melts and then caramelizes, and so on, they can begin to understand the complex chain of changes and reactions that happen within the cookie dough as it bakes in the oven. 

Check Out These Related Resources:

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