We present in this article a multidisciplinary approach to teaching high-school chemistry in Serbia, illustrated by an example of the course topic of metals. The aim is to increase the level of interest in studying chemistry and acquiring knowledge that is applicable in daily life. The experiment was carried out in four classes of second-year gymnasium students. The redesigned materials can serve as a model for the preparation of similar materials for other course topics. Multidisciplinary approach in processing of the lesson on metals and the redesigned curriculum content significantly increased the interest of the students and improved their knowledge.

The removal of Cu(II) ions from aqueous solutions by adsorption onto nettle after incomplete incineration (IIN) has been studied in batch mode. The experimental isotherm results have been fitted using Langmuir, Freundlich, Temkin and Dubinin-Radushkevich equations. A comparison of kinetic models applied to the adsorption of Cu(II) ions on the adsorbent was evaluated for the pseudo-first order, the pseudo-second order and Elovich kinetic models. The pseudo-second order kinetic model was found to correlate the experimental data well. To evaluate competitive adsorption the batch experiments were carried out among the Cu(II), Pb(II) and Cd(II). The affinity order for the ternary system was Pb(II) > Cu(II) > Cd(II). FTIR and SEM analysis indicated that IIN could be used as an efficient biosorbent whose chemical structure and morphology is not altered during adsorption process.

Chemically modified Lagenaria vulgaris shell was found to be an efficient, regenerative biosorbent to remove copper ions from wastewater models.

In this study, raw and chemically activated natural zeolite from Zlatokop deposit (Serbia) were investigated by FTIR, XRD, SEM-EDX, TGA and BET in order to define their properties as further potential sorption materials. Obtained results indicate porous (meso-pore range) and defined crystal alumino-silicate structure of these materials, with Na+, K+, such as Ca2+ and Mg2+ as dominating exchangeable cations. Content of clinoptilolite (ca. 90%) indicates the high quality of the zeolite samples. Preliminary sorption analyses of these materials toward copper(II) ion from aqueous solution showed good removal efficiency for base activated zeolite (zVBB) compared to raw natural (zVBN) and acid activated (zVBA) zeolite. Since these were preliminary sorption tests, the investigated zeolites will be further examined under different experimental conditions.

The concept of mobile access to information is present in all aspects of society today and it constitutes the digital need of the individual. The aim of this paper is to provide a brief overview and systematization of various easily accessible android applications for mobile phones and tablets that would promote proper understanding of chemical concepts, as well as facilitate the acquisition of knowledge in chemistry by students in both primary and secondary schools. Mobile learning has many advantages such as diversity, entertainment, communication, interactivity, but also learning completely adjusted to the needs of the individual regardless of place and time. The use of these tools has a great impact on a different approach in teaching chemistry and contributes to improving of the final learning outcomes. That is why it is important for every teacher to integrate technology into pedagogy and use it to promote student-centered learning.