Yesterday we attended one of the hundreds of Science Days venues open for free all over Belgium. Simon particularly enjoyed chemistry demos, even though he was disappointed that some companies showing their inventions didn’t want to share the actual formulas behind the tricks.
The simple non-newtonian fluid remains a favourite.
Making your own bath bombs.
Simon dazzled by how insulator foam (polyurethane) is produced as the result of a reaction between two highly viscous substances, an isocyanate and a polyol (polyether). Another fascinating thing about this demo was that the tool mixing the two ingredients actually employed magnets!
A workshop explaining why ships don’t sink and if they do, why:
Exploring 3D printing:
Heat indicator (material changing color depending on water temperature):
The good old baking soda and vinegar demo revisited: