Professional paper

https://doi.org/10.15255/KUI.2019.034

Chemical (Silicate) Garden, One Experiment for Education in STEM Field

Marina Čalogović orcid.org/0000-0001-6952-2104 ; ProGEO-Croatia, Horvatovac 102a, 10 000 Zagreb, Croatia

Abstract

Visualization of chemical processes is of primary importance in chemistry education. One of such experiments is the chemical garden, which is formed by addition of soluble metal salts in a solution of sodium silicate, or some other anion that forms a colloid gel with a metal ion. Gel forms tubular semi-permeable membranes, which morphologically resemble garden plants. This paper describes preparation of a chemical garden with easily obtainable chemicals. This simple experiment visualizes osmosis-related precipitation and is a very convenient teaching tool.




This work is licensed under a Creative Commons Attribution 4.0 International License.

Keywords

STEM; experiments; osmosis; silicates; chemical education

Hrčak ID:

232576

URI

https://hrcak.srce.hr/232576

Publication date:

7.2.2020.

Article data in other languages: croatian

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