The Expanding Marshmallow

Help students explore and understand Boyle’s Law with this simple demonstration. See how a change in pressure affects the volume of marshmallow. Students will easily remember the relationship between pressure and volume after participating in this activity. By simply placing a marshmallow inside a syringe and using the plunger to increase and decrease the pressure, your students can watch the marshmallow expand and shrink to get a clear understanding of Boyle’s Law.