Thermodynamics: Enthalpy of Reaction and Hess Law

A beautifully designed, eighteen-page chemistry tutorial awaits your learners. The main topics: enthalpy and entropy. By completing this lesson, students will be able to define these concepts, determine whether each is increasing or...

Equip your chemistry class with the tools to properly understand endothermic and exothermic reactions. Young chemists collect, analyze, and graph data to determine how the Law of Conservation of Matter is applied to chemical composition...

Viewers learn how to identify the substances in a chemical reaction, how to balance it, and the different types of chemical reactions by watching a presentation that also includes a review of monomers and polymers. The presentation ends...

Sal introduces students to Hess's Law. The law states that the energy change of a process is independent of how we get from one state to another. He sets up a series of reactions, and solves them to illustrate the principles behind...

Tired of long, tedious enthalpy calculations? Look no further than Hess' Law! Young chemists discover a shortcut using changes in enthalpy with a video from JFR Science. The narrator talks about the theory behind the law, then performs...

Where does the heat come from in hand warmers? Learn about enthalpy, the change in energy in a system, to see that when chemical bonds are broken or formed, energy moves into and out of a system because of chemical reactions. 

Explanation of bond enthalpy that includes examples of calculating enthalpies of reaction using bond enthalpy.

What happens when chemical bonds break and form? Science scholars explore the movement of energy in a chemical system by watching a well-rounded video. The narrators illustrate exothermic and endothermic reactions in terms of temperature...

Using an illustrated example, the difference between an endothermic and an exothermic reaction is described. The concept of enthalpy, or heat energy change, is explained, and the energy diagrams of reactions are presented.

Understand chemical reactions by learning about enthalpy and entropy.