Endothermic Chemical Reactions. the reaction of barium hydroxide octahydrate crystals with dry ammonium chloride. dissolving ammonium chloride in water. the reaction of thionyl chloride (SOCl2) with cobalt(II) sulfate heptahydrate. mixing water and ammonium nitrate. mixing water with potassium chloride.
Gelatin is available in the market both in the powdered form and in sheet form. Pigskin gives gelatin with each processing, but the highest quality of gelatin is one that is obtained with first time processing of pigskin. This gelatin has a great gelling capacity and is almost clear. It also has a mild flavor.
I am a software engineer, but also have many years of study in fields of neuroscience, molecular biology, and theoretical physics. A gel is a substance this is mostly a liquid, but behaves as a solid due to cross-linking bonds (usually due to polymerization) that exists in the overall structure. To show the contrast, a solid is usually a substance held in some sort of crystalline form (be it due to ionic, covalent, or hydrogen bonds), which makes the overall structure rigid, so that it does not flow.