Isobaric Expansion Of Air

Purpose

To demonstrate expansion of air without change in pressure.
 

Equipment

Can, hotplate, plastic bags, fan and wooden blocks.

 

Suggestions

Do not overheat and break the plastic bag.
 

Setup Time

5 min.
 

    Images

    i3-32

    Description

    Air is isolated in the can by a plastic bag sealed over the mouth. If the can is heated by the hot plate the air will expand to fill the plastic bag. If the fan blows cool air over the can the plastic bag will become evacuated.