Enthalpy

Household Fenton's Reagent

Potassium hydrogen tartrate is oxidized to produce carbon dioxide in an exothermic reaction.
Iron Ion

Hot and Cold Packs

Calcium chloride it gets hot when water is added to it, ammonium chloride gets cold.
Hot and Cold Packs

What's In A Name?

Potassium chloride is contrasted potassium chlorate to illustrate the importance of nomenclature details.
Gummi Destruction!

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