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 sample calculations.

Concepts

enthalpy, enthalpy change, hess's law, moles, heat of formation, heat of reaction, reactants, products

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Additional Tags

science

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Instructional Ideas

• Add the resource to an existing enthalpy lesson plan for a quick overview of Hess' Law
• Incorporate diagrams of enthalpy changes into the lesson so viewers get the big picture

Classroom Considerations

• Your class should understand enthalpy before viewing
  

• This video is hosted on YouTube

Pros

• Narrator discusses and illustrates the advantages of using Hess' Law over the much more lengthy way of calculating enthalpy changes
• Content creates strong ties to prior knowledge
  

Cons

• None

Common Core

SL.9-10.2