
Seltene Erden
Authored by Georg Judmaier
Science
12th Grade
Used 1+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Wlecher der folgenden Begriffe beschreibt die Gruppe von 17 Elementen die Seltene Erden genannt werden?
Metalle
Halogene
Edelgase
Alkalimetalle
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Welches Seltene Erdmetall wird häufig in Permanentmagneten für <elektromotoren verwendet?
Eisen
Kupfer
Neodym
Yttrium
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Welches seltene Erdmetall findet häufig Anwendung in Batterien, Hybrid und Elektrofahrzeugen?
Lanthan
Yttrium
Titan
Zirkonium
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bei welcher Art der erneuerbaren Energieerzeugung werden seltene Erden für die Herstellung leistungungsstarker Magneten verwendet?
Geothermie
Solarenergie
Windkraft
Wasserkraft
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Welches der folgenden Elemente gehört zur Gruppe der Seltenen Erden?
Aluminium
Gold
Scandium
Terbium
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Welche der folgenden Herausforderungen ist mit der Gewinnung von seltenen Erden-Metallen verbunden?
Geringe Nachfrage
Hohe Verfügbarkeit
Umweltauswirkungen
Einfache Extraktion
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Welche der folgenden Aussagen trifft für die Seltenen Erdmetalle zu?
Sie sind radiokativ und schlecht für die Umwelt
Sie haben ähnliche Eigenschaften wie Edelgase
Sie kommen in der Erdkruste in oxidischer Verbindung vor
Sie kommen nur in biologischen Organismen vor
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