Activity 2.3 - Why do companies include acids into cleaning products? – Intended effects

Learning Aims:

Students learn to explain the functionality of acids based on their chemical structure and reactions.
Materials:

Experiment: see classroom material Activity 2.3
Suggestions for use:
Since students know that lime scale build-up occurs in water heaters, this experiment can be used as an introduction to the process of calcification.
Source:

Freienberg, Julia (2002). „Chemie fürs Leben – ein neuer Ansatz für den Chemieunterricht am Beispiel der Behandlung von Säuren, Laugen und Salzen in der Sekundarstufe I sowie Anknüpfungsmöglichkeiten für die Sekundarstufe II“, Dissertation, University of Rostock, 18.12.2002.