Modern Chemistry, Lesson 95: Hard Water - Its Formation
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✎ Suggest a correctionAn experiment is carried out showing that calcium hydroxide in water reacts with carbon dioxide to form a precipitate. Uses the soap test to show that much of the hardness of temporary hard water has been removed by boiling.
Sources
- Catalog of Classroom Teaching Films for Georgia Schools, No. 10 (Georgia Department of Education) — title, creator, length, description
Record added 2026-09-11 00:30:22 · Suggest a correction