The use of hydrogen and hydrogen cars is seen as a promising solution to reduce carbon emissions. It is therefore an interesting topic for school, especially for science projects. In this context, it must be emphasized that hydrogen is not a primary energy source, but rather a carrier. This paper describes the contents, the materials that were used, and the conduction of an experiment with a hydrogen car done with eighth graders in a university outreach program. By using a model hydrogen car (Figs. 1 and 2), students were brought into a position in which they were able to demonstrate and conclude whether hydrogen is a viable technology. They were able to discuss the efficiency, the renewable (or not) nature of hydrogen, and limitations of the technology. The results of a small study (N = 33) done within the outreach program showed that the students enjoyed the experiment...

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