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
Build 14 assorted solar robots, some of which can travel over water!
Working model representing the sun, earth, and moon and their relationships.
This smaller transportable Van de Graaff Generator will easily fit in any classroom!
This genuine meteorite is great for the rock collector in your family!
The Star-Ball Magnetic Puzzle is the perfect creativity tool for innovators, artists, writers, students, and you!
Ever wonder how to survive in the wilderness? These cards can help!