Question: fill a small beaker with tap water, bring it back to your station and allow it to stand undisturbed for at least five minutes in

fill a small beaker with tap water, bring it back to your station and allow it to stand undisturbed for at least five minutes in a place where it can be easily seen but will not be in the way. This will insure that there is little or no current in the water. Ask a TA to bring the Petri dish with cupric sulphate (the blue powder) to your station, and to drop a generous pinch of this powder into the water (without disturbing the beaker). Observe at intervals through the next hour, but do not disturb the beaker.

1) observation:

2) Explanation:

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