This is a pretty classic chemistry demo called the Golden Rain. It involves precipitation of gold-colored lead iodide from a hot solution as it cools down. It is formed very simply by combining a soluble iodide salt with a soluble lead salt, in my case potassium iodide and lead nitrate.
A write-up can be found on my blog, here: [ Ссылка ]
Music: Reverie (small theme) by _ghost of ccmixter.org.
link: [ Ссылка ]
Freely usable for all purposes under the Creative Commons license.
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