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13 Jahre Erfahrung mit
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Alternative Stromerzeugung
mit Hibiskusblütenfarbstoffsolarzellen am 25.März 2019
Farbstoffsolarzellen sind eine wichtige und neue Art von Solarzellen. Einsatz finden diese auf Dächern oder integriert in Fensterscheiben aufgrund ihrer Transparenz. Ihre Vorteile gegenüber Siliziumzellen liegen in den billigeren Herstellungskosten und der Fähigkeit diffuses Licht besser zu wandeln. Eine Farbstoffsolarzelle ist eine elektrochemische Zelle, deren Funktionsprinzip vergleichbar mit dem Prozess der Photosynthese in der Natur ist. In beiden Prozessen werden durch Absorption von Licht in organischen Farbstoffkomponenten angeregte Zustände erzeugt.
Unter Lichteinwirkung wird eine Ladungstrennung in einem Hibiskusblütenfarbstoff erzeugt.
Chemie und Biologie in den 10. Klassen – mal anders –
Highlights im Februar und März
Am 11.02. und am 12.02.2019 startete das Chemieerlebnis: Herstellen von Kosmetika.
Im Vordergrund dieser Schülerversuche standen die Bildungsprozesse sowie die Grundlagen der Herstellung einer Emulsion. In einer theoretischen Einführung wurden neben den wichtigsten Fachbegriffen, auch die Aufgaben und chemischen Strukturen der Wirk- und Inhaltsstoffe näher erläutert.
Weiterlesen: Chemie und Biologie in den 10. Klassen – mal anders –
BTU-Projekt - Experimentieren mit CO2
Am 4. und 5. März 2019 kam das Mobile Schülerlabor „Science on Tour“ der BTU zu uns ans Friedrich-Ludwig-Jahn Gymnasium, um mit uns, den Schülerinnen und Schülern des Jahrgangs 8, spannende Experimente rund um Kohlenstoffdioxid durchführen zu können. Zuerst wurden wir an das Thema etwas genauer herangeführt.
Trockeneis ist cool
Am 20.06.2018 und am 21.06.2018 führte der 8. Jahrgang ein Chemieprojekt mit Science on Tour durch. Es ging darum, Eigenschaften von Kohlenstoffdioxid kennen zu lernen. Am Anfang wurde uns die BTU Cottbus- Senftenberg vorgestellt und wir erfuhren etwas über das Gas CO2. Außerdem wiederholten wir die drei Aggregatzustände (fest, flüssig, gasförmig). Danach ging es direkt zum praktischen Teil über. Mithilfe von Wasser und einer Brausetablette stellten wir das Gas erst einmal her, um anschließen Experimente damit durchführen zu können.
Schmerzfrei dank Paracetamol
Am vierten Januar 2018 war es wieder so weit – zusammen mit „Science on Tour“ von der b-tu Cottbus-Senftenberg fand ein Chemie Projekt im Rahmen der 12. Klassen an unserem Gymnasium statt. Dieses Mal ging es um die Paracetamol-Synthese, die wir Schüler der Chemie-Grundkurse selbst durchführen konnten.