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Disappearing plastic

Description

Expanded polystyrene is placed in propanone and apparently disappears. The gas bubbles in the material create a fizzing effect as they are released.

Credits

:
This is an experiment from the Practical Chemistry project, developed by the Nuffield Foundation and the Royal Society of Chemistry.
disappearing-plastic



Apparatus Chemicals

The demonstrator will require:

Eye protection

Supply of paper towels, newspaper or similar (Note 1)

Beaker, 1 dm3

Large transparent container (Note 2)

For one demonstration:

Propanone (acetone), (HIGHLY FLAMMABLE, IRRITANT), 50 cm3

Expanded polystyrene pieces, large quantity (Note 3)

Expanded polystyrene drinking cups, a few

Refer to Health & Safety and Technical notes section below for additional information.

 





 


Expanded polystyrene is placed in propanone and apparently disappears. The gas bubbles in the material create a fizzing effect as they are released.

ADDITIONAL INFORMATION

This is a resource from the Practical Chemistry project, developed by the Nuffield Foundation and the Royal Society of Chemistry. This collection of over 200 practical activities demonstrates a wide range of chemical concepts and processes. Each activity contains comprehensive information for teachers and technicians, including full technical notes and step-by-step procedures. Practical Chemistry activities accompany Practical Physics and Practical Biology.