45. Мермер на жар

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45. Мермер на жар
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2021-09-03 - commons.wikimedia.org

Summary

Grilled marble - A small piece of marble is heated to red hot on a Bunsen burner. When added to water containing few drops of phenolphthalein indicator, the liquid turns raspberry red – a proof that the reaction is basic. Unheated piece of marble does not give such a reaction. The marble was pyrolys

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Details

  • Source collection: Wikimedia Commons
  • License: CC / Public Domain
  • Category: Mathematics

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Academic references

  1. Primary source record: https://commons.wikimedia.org/wiki/File:45._%D0%9C%D0%B5%D1%80%D0%BC%D0%B5%D1%80_%D0%BD%D0%B0_%D0%B6%D0%B0%D1%80.ogg
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