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08 The Noble Gas Configuration

The noble gas configuration is a particularly stable electron configuration. The driving force for many chemical phenomena is this state. It should be remembered again that the nucleus is not altered during chemical reactions. Original: "Wolfgang Dukorn" Original: German. All translations in this

The natural water cycle

The natural water cycle is powered from solar energy. Its thermal radiation evaporates water from oceans, lakes and rivers into water vapour. As precipitation, the water enters lakes, rivers and groundwater and eventually flows into the sea. Author: 3sat/nano, mirror TV, Christine Voges, R. Engelk