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Climate, energy and a mountain full of sun: Visit to Fabriek Energiek
Divided into small groups, the students independently go through the themes in this collection during a visit to the Fabriek Energiek educational center.
The following themes are discussed:
- what is climate;
- fossil fuels;
- measuring CO₂; …
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Qualitative determination of sulphites in wine
Almost every label on a bottle of wine states that the wine contains 'sulfites'. Sulphites are therefore a frequently used additive during the vinification process because many winegrowers are convinced that they are indispensable to …
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The critical micelle concentration of sodium dodecyl sulfate
The determinations of the critical micelle concentrations (cmc) for ionic surfactants using specific conductivity measurements are excellent research projects for students and pupils to gain insight into some properties of substances in solution. …
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Giving an extra dimension to classic equilibrium tests
Chemical equilibrium is a difficult topic theoretically. By studying the complexation reactions in an aqueous solution of a copper salt with hydrogen chloride and with ammonia, it can be made clear that there is a single reaction system.
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Experiment with copper nanoparticles to show color changes
In this contribution, we discuss a student project where copper nanoparticles were prepared by reducing copper (II) sulfate using sodium borohydride. The use of iodide ions provides the necessary stabilization of the nanoparticles formed. The …
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The discovery of argon and the importance of accurate data analysis
John William Strutt, third baron of Rayleigh (1842-1919), is one of the most impressive figures in the history of the natural sciences. He is best known for his explanation of the blue color in the sky caused by Rayleigh scattering. It is less …
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Synthesis of gold colloids from honey
Gold colloid synthesis is a colorful nanochemical experiment. In this
contribution we discuss a student project where gold colloids are prepared from
a gold (III) salt using honey. The experiment is simple in execution.Translated by
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Determine the critical micelle concentration
Surfactants tend to form micelles in solution. The critical
micelle concentration is an important parameter for describing stability
of micelles. In this article we describe a relatively simple experiment through which
conductivity measurements the …Translated by
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Battle for the light: Forest game
No matter how quiet it seems in a forest, the plants you see are constantly fighting for every ray of sunlight. And that battle starts as soon as a forest is created. The first herbs are overgrown by ferns, which in turn are shaded by pioneer …
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Monument Log: Lesson Idea
Visit and explore the same immovable heritage several years in a row and bond with it. For example, the students follow the evolution year after year, they record this in a log and they take measurements.
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Phyphox: Experiments
A number of Phyphox experiments that students can perform with their smartphone.
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Too hot or not?: Climate change worksheets
Through various practical assignments, the students get to know the negative consequences of climate change better. They are then challenged to develop an alternative scenario in response to this. A game of propositions and a short discussion …
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