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Help your students take the point of view of the chemical reaction— a central idea in Thermodynamics. Utilize this one-page activity sheet to provide your AP chemistry students with practice addressing different applications of endothermic and exothermic reactions in a way to self-check and the reveal of a colored tangram (brain break!). Use it as an assessment tool, a group assignment, a homework assignment, or after a lab.
Introductory paragraph addresses:
Tangram addresses the following topics:
Students choose whether different situations refer to an endothermic or exothermic reaction. Then, using blue/red, they color-code in their answers, helping make grading easy as either a circled list up/down or a visual image.
This product is designed to help students prepare for the following AP Chemistry Learning Objectives:
LO 5.4 The student is able to use conservation of energy to relate the magnitudes of the energy changes occurring in two or more interacting systems, including identification of the systems, the type (heat versus work), or the direction of energy flow.
LO 5.5 The student is able to use conservation of energy to relate the magnitudes of the energy changes when two nonreacting substances are mixed or brought into contact with one another.
LO 5.6 The student is able to use calculations or estimations to relate energy changes associated with heating/cooling a substance to the heat capacity, relate energy changes associated with a phase transition to the enthalpy of fusion/vaporization, relate energy changes associated with a chemical reaction to the enthalpy of the reaction, and relate energy changes to PΔV work.
LO 5.8 The student is able to draw qualitative and quantitative connections between the reaction enthalpy and the energies involved in the breaking and formation of chemical bonds.
LO 5.12 The student is able to use representations and models to predict the sign and relative magnitude of the entropy change associated with chemical or physical processes.
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