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🔗 Source: sciepub.com
📊 Size: 825 KB
👤 Author: SciEP Productions
⬇️ Downloads: 102

Summary

The article discusses using color-changing markers as a topic for inquiry-based chemistry education. The markers, also known as "Magic Markers," change color when painted over with a "Magic Pen." The author developed experiments to research the chemical principles underlying this effect, suitable for upper secondary level students. The investigations focus on the Magic Pen's ingredients, which are found to be similar to those of commercial ink erasers, containing water, reducing agents, and soda, making the fluid alkaline. The experiments also explore the colored Magic Markers, revealing that the dyes change color due to the high pH value of the Magic Pen fluid, with some dyes being acid-base indicators. Chromatography experiments show that the pens contain dye mixtures, and the color changes are attributable to various effects, including changes in individual components of the dye mixture upon wetting with an alkaline sodium sulphite solution.

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Description

The article discusses using color-changing markers as a topic for inquiry-based chemistry education.

Technical Information

  • File Format: PDF
  • File Size: 825 KB
  • Pages: 5
  • Language: EN
  • Author: SciEP Productions
  • Total Downloads: 102
  • Last Updated: 1 month ago

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