Modern Chemistry, Lesson 95: Hard Water - Its Formation

Duration: 30 min

Creator: Encyclopaedia Britannica Educational Corporation

Description: An 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.

Metadata Source:Catalog of Classroom Teaching Films for Georgia Schools, No. 10 (Georgia Department of Education)