The Disintegration of Polystyrene Lab part of MnSTEP Teaching Activity Collection:MnSTEP Activity Mini-collection
This inquiry based lab shows students how acetone breaks down the cross-links holding together polystyrene. Students will add acetone to either packing peanuts or pieces of foam cups. The result is a tiny bit of material (polystyrene) in the beaker. Discussions following the lab can cover the conservation of matter (the mass should stay the same), percent yield and cross-link bonding.
What Does Meteor Size Have to Do with Crater Size? part of MnSTEP Teaching Activity Collection:MnSTEP Activity Mini-collection
This inquiry based field experiment will allow students to discover what causes meteors to make craters that are much larger than the meteor themselves. They will also find how meteors of different shapes and sizes will create varying craters. Students will use different objects and different mediums to create a variety of meteors and craters. Students will work together to discover answers to questions that they come up with.