Talc is a clay mineral that, along with corn starch, was the primary ingredient of baby powders, often called simply talcum powder when talc was the main agent. Talc is aso notable for its identificaion as the lowest possible hardness on the Moh's scale. With a value of 1, talc is so soft that it can be scratched by a finger nail.
Included: one 1" chunk of talc
An ancient toy featuring optical illusion and hands-on fun that never grows old!
Build a tumbling robot that gets up right after it has fallen down, without any outside help!
This classic desk toy will keep you amused!
Provides the power to execute all the basic electrostatic demonstrations on an energetic and dramatic scale with up to 350,000 volts!
Command robotic creations with this cool construction kit!
Comprehensive collection of 30 fossils.