Ultra-pure gallium has a beautiful, silvery appearance, and the solid metal exhibits a conchoidal fracture similar to glass. Gallium is silvery white and soft enough to be cut with a knife. Melting point is 29.76°C (85.57°F). NC-13960
Aerogels are a group of materials in which the liquid portion of a gel has been replaced with a gas. Commonly called "frozen smoke", 99.8% of the volume is empty space within a fine silica structure. This popular item is essential for any science enthusiast's collection. NC-14625
Soak in water and these spheres grow 300 times their size! After a while out of water, evaporation will dry out and shrink the spheres again. Spheres are made from a hydrogel known as super absorbent polymer (or SAP). Ages 8+. NC-14674
This one inch round uranium glass ball has a yellow tint, but will glow bright green under ultraviolet light. Makes a great sample for uranium if you're collecting the elements. NC-14632
Spin the Rattleback clockwise and watch it stop, rattle up and down and then spin in the other direction! A science curiosity whose ancient and mysterious properties capture the attention of all ages. NC-14685
The ultimate future-proof periodic table with 118 elements, 24x36 inches size, and neutral color-scheme. Future-proof by adding blank boxes as placeholders for the predicted, undiscovered elements, and featuring atomic weight, magnetism, and more. NC-14627
This is a new generation of phosphorescent powder that can glow 10x brighter and 10x longer than traditional glow-in-the-dark materials. It glows bright enough to be seen in daylight, lasts up to 30 hours, and can be recharged indefinitely. NC-14673
This is a new generation of phosphorescent powder that can glow 10x brighter and 10x longer than traditional glow-in-the-dark materials. It glows bright enough to be seen in daylight, lasts up to 30 hours, and can be recharged indefinitely. NC-14678
Have fun with this utterly addictive Ferrofluid Magnetic Display Bottle. Ferrofluid is the astonishing liquid that becomes highly magnetized in the presence of magnetic field. With Ferrofluid in a bottle and the supplied neodymium magnets, you can easily play with this spectacular substance. NC-14699
Create magical flames of blue, green and red in your campfire, fire pit or fireplace. Directions included. Only use with adult supervision. NC-14741
