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A homogenizer works by breaking down the fat globules in the milk and forcing them to regroup, then breaking up the layers that form so the globules inside of the solution remain at the desired sizes, explains How Stuff ... More »

When zinc in its metallic form and hydrochloric acid are combined, they form hydrogen gas and an aqueous solution of zinc chloride. This type of a reaction is called an oxidation reduction reaction. More »

A Soxhlet extractor works by boiling a solution that has a solute of limited solubility in a percolator, then cooling and collecting the condensate in a reservoir from which the concentrated solute can be extracted. A si... More »

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The biuret test detects peptide bonds, and when they are present in an alkaline solution, the coordination complexes associated with a copper ion are violet in color. The protein concentration affects the intensity of th... More »

In a lab, Lugol's solution is typically used as an indicator for the presence of starch in a solution. Lugol's solution, also called Lugol's iodine, is a solution of elemental iodine and potassium iodide in water that ge... More »

Make crystals by dissolving borax in boiling water, adding food coloring and dipping a pipe cleaner in the solution. You need a pot, a jar, a pipe cleaner, borax, food coloring scissors, string and a pencil. More »

Phenolphthalein is an indicator that turns from clear to pink in a basic solution, according to Reference.com. In a strongly acidic solution, the indicator is orange, but in the pH range of 0 to 8.2 it is clear. The indi... More »