Properties of gases, air pressure and ‘sticky’ cups

Photo of a balloon stretched over the rim of a bottle

Source: © Royal Society of Chemistry

Try this investigation to explore the effect of heat on gases, with detailed teacher notes, classroom slides and a video demonstration.

This experiment focuses on gases and air pressure. First watch the video on how to carry out the ‘sticky cups’ demonstration, then find out how your learners can investigate how gases expand using water, a bottle and a balloon.

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