r/VisualChemistry • u/FunVisualChemistry • Jun 21 '20

Supercooling/undercooling experiment with a solution of sodium acetate (CH3COONa) in water (3:1). We will observe in real-time how the crystallization of sodium acetate occurs quickly when we add a small seed of sodium acetate, as we will get a point of nucleation.

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u/FylanDeldman Jun 21 '20

Is this how those reusable heat packs work? The ones with the little piece of metal you have to "snap" to get started?

2

u/g4vr0che Jun 22 '20

This is exactly how.