Thermochemistry: Heat and Enthalpy

Professor Dave explains thermochemistry, focusing on energy changes in chemical reactions. He discusses exothermic and endothermic reactions, enthalpy, and energy conservation. The video covers heat flow, energy units like joules and calories, and thermochemical equations. It concludes with a comprehension check.

How is heat defined in the context of thermochemistry?

What is the significance of the calorie in thermochemistry?