Air Puck, perfectly balanced and glides on a cushion of air for nearly frictionless motion across any smooth surface. Sturdy bumpers will survive collisions with walls, shoes, or other Air Pucks.
Oscillating Reaction- The Traffic Light kit, Includes: 1x10 g Sodium Hydroxide, Beads UN1823, 1x0.5g Indigo Carmine, makes 50ml, 5x5 g Dextrose (Glucose), A flask containing a yellow solution gently swirled and the solution turns red
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