This is a unit in AP chemistry. Students will learn what makes a reaction endothermic vs exothermic and decide which phases changes are which. Students will also calculate enthalpy various ways.

This is a chemistry lesson in which students will classify properties as physical or chemical by going to the board and using ACTIVotes. Students will classify changes as physical or chemical as well as the various phase changes with plenty of opportunites for student engagement. This lesson is part of the matter unit.