Produced by the Institute of Physics, this video shows a simple demonstration to stimulate discussion on gas pressures and gas laws.
A vacuum wine saver pump and stopper are used to reduce the air pressure in a bottle,causing the air inside marshmallows in the bottle to expand and the sweets to swell.
The teachers' notes include the equipment needed, tips and contain a full explanation of the physics involved.
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Please be aware that resources have been published on the website in the form that they were originally supplied. This means that procedures reflect general practice and standards applicable at the time resources were produced and cannot be assumed to be acceptable today. Website users are fully responsible for ensuring that any activity, including practical work, which they carry out is in accordance with current regulations related to health and safety and that an appropriate risk assessment has been carried out.
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|Subject(s)||Physics, Science, Demonstrations, Practical work|
|Published||2010 to date|