What was the role of the water test tube for each phase?

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asked Oct 11, 2017 145k views

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Greenish · Answer 1 · 2017-10-17T11:56:29+0000

The role for the water test tube in each phase was that the water was used for comparison or control. In water we know there are no Macro-molecules, just water. Iodine is pretty dark but when you put it in the solution it will change.

What was the role of the water test tube for each phase?

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