Die Forscherbox

by to-teach Team

9 pagesMittelstufeChemistry

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Write down the three unknown solutions or solids as test samples. These will serve as the basis for all subsequent experiments, observations, and analyses aimed at identifying the substances.

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Description

Zielsetzung: Das Arbeitsblatt ist als motivierendes Chemie-Rätsel (Escape-Room-Prinzip) aufgebaut. Die Lernenden unterstützen einen Professor im Labor dabei, vertauschte Beschriftungen von drei unbekannten Flüssigkeiten (Proben A, B und C) mithilfe systematischer, experimenteller Nachweisreaktionen zu entschlüsseln.

Inhalte und Methoden: Die Inhalte werden durch die Verbindung einer digitalen Problemstellung mit qualitativen Nachweisexperimenten vermittelt: Ausgehend von einem Audio-Guide erfassen die Lernenden relevante Informationen und untersuchen unbekannte Flüssigkeiten hinsichtlich ihrer Löslichkeit, ihres Säure-Base- und Redoxverhaltens sowie ihrer Verdampfungseigenschaften. Die Ergebnisse werden systematisch in einem Laborprotokoll dokumentiert und anschließend genutzt, um die Stoffe in einem wissenschaftlich begründeten Abschlussbericht zu identifizieren.

Kompetenzen:

Fachkompetenz: Anwendung von Wissen über Stoffeigenschaften (Löslichkeit, pH-Wert, Säure-Metall-Reaktion), um unbekannte Substanzen zu identifizieren.
Erkenntnisgewinnung: Eigenständiges Skizzieren und Beschriften von Versuchsaufbauten sowie die Durchführung einer qualitativen Analysestrategie.
Medienkompetenz: Nutzung digitaler Lernelemente (QR-Code/Audio) zur Erschließung naturwissenschaftlicher Aufgabenstellungen.
Sprachkompetenz: Formulierung eines logisch konsistenten Detektivberichts unter Nutzung der chemischen Fachsprache.

Zielgruppe und Niveau: Mittelstufe

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