Naslov
The Candle, Aletrnative Concepts and Chemistry Teaching

Autori
Sedlar, Katarina ; Judaš, Nenad

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, stručni

Skup
42nd IUPAC Congress - Chemistry Solutions

Mjesto i datum
Glasgow, Ujedinjeno Kraljevstvo, 02.08.2009. - 07.08.2009

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
chemical education; alternative concepts; candle

Sažetak
A cross-age study was performed with the intention to examine alternative concepts that were developed by Croatian students in explaining the results of a experiment and describing observed chemical change through the concept of a chemical equation. The experiment in question was the simple and well-known experiment with the candle burning under a glass vessel. We have also performed an extensive analysis of available text-books, that indicated that this experiment is often used misleadingly in teaching. An example of this is using the experiment to demonstrate the volume-percentage of the oxygen in a sample of air. Anyway, if properly conducted, the burning candle experiment should definitively be used in teaching Chemistry at the introductory level, because of its extremely high educational value. Through this experiment, students are faced with a real and interdisciplinary scientific problem. To solve the problem, they must use the knowledge of physical and chemical concepts they have acquired so far and train themselves in scientific method.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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