A chemical change is a way in which substances are altered into one or more new and different substances. The given image is showing this process, i.e., chemical change.
What is precipitation?
The definition of a precipitation reaction is "a chemical reaction that occurs in an aqueous solution which is the result of combining ionic bonds, and form an insoluble salt."
Precipitates are insoluble salts formed during precipitation reactions.
Thus, the given image is showing the precipitation reaction.
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