This Association for Science Education (ASE) publication about properties of metals was developed in association with the British Aerospace Dynamics Group. At the time the Dynamics Group employed over 20,000 people at ten major design/production establishments...

Gelli Baff, a crystalline powder, has been dumped into a bathtub filled with water. How can you force the hydrogel to go down the plughole in order to drain the bathtub? 

In this investigation, students learn about swelling reactions, balanced reactions, and polymerisation. Students should be able to...