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Safe Chemistry

Chemistry experiments suitable for school settings, with materials, risks, supervision and disposal clearly explained.

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Repolho roxo cortado ao lado de cinco copos transparentes com soluções em tons de rosa, roxo, azul, turquesa e verde, acompanhados de referências de vinagre, água e bicarbonato.
Safe Chemistry13/09/20267 min read

Red cabbage as a pH indicator: build a color scale with controls

Learn how to use red cabbage to compare acidity and basicity with controls, a standardized protocol, an observation table, and clear interpretation limits.

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