Stručni rad
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-Hrvatska, Horvatovac 102a, 10 000 Zagreb
Sažetak
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.
Ključne riječi
STEM; experiments; osmosis; silicates; chemical education
Hrčak ID:
232576
URI
Datum izdavanja:
7.2.2020.
Posjeta: 2.761 *