Balloon in a vacuum

Back to 4E - Gas law
PIRA index: 4E20.40

Description

A balloon expands when the air pressure is reduced around it. A balloon in glass jar connected to a vacuum pump will expand to take the entire volume of the jar

Equipment

• Bell jar
• Little balloon
• Surface with seal and hole to the vacuum pump
• Vacuum pump
• Straw

Instructions

• Place the rubber sheet on the the circular plate and make sure the holes are aligned
• Place the balloon in the middle
• Place the bell jar on top of the balloon making sure nothing is between the rim and the rubber sheet.
• Connect and turn on the vacuum pump