Suppose you take some raw egg white and mix it into a beaker of room temperature water to form a solution. If you boil the water, a precipitate will form in the water. Explain why heating the protein solution created the precipitate?

Heat results in coagulation of protein chains so white precipitate is formed.

Explanation:

On heating, the hydrogen bond that stabilize the protein conformation breaks.The breaking of hydrogen bonds results in unfolding the tertiary structure of protein.The unfolded peptides then reform into new conformation and form a coagulum.This explains why a white precipitate is formed when protein solution is heated.

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Iwould say overuse ( but not 100% sure ) in the u.s. we tend to overuse water by leaving it running, throwing it away, taking long showers, etc.