The liquid in the hand warmer is a very concentrated solution of a salt called sodium acetate. The sodium and acetate ions are ready to bond with each other and with water molecules to form a crystal.

We know ice as being a chilly substance, but what if we cranked the temperature up? Sodium acetate is known as hot ice. It's ...

ALTHOUGH it is well established that isolated frog skin uses energy for the active transport of sodium, little is known about the metabolic processes providing this energy. Huf 1 showed that ...

A seed crystal can be dropped into a saturated solution of sodium acetate. The solution will suddenly crystallize and turn to solid. Alternately, the solution may be slowly poured out onto a seed ...

When it is exposed to air, the iron begins to rust. This rusting process produces heat. The second contains a solution of the chemical sodium acetate and a small metal disc. When the disc is bent, ...