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SAT, 08.04.2020 02:32 perezrhonda30

Stirring dry yeast into a bowl of hydrogen peroxide
causes bubbles to form. Blowing air into a glass of milk
with a straw also causes bubbles to form. One of these is
a physical change, and the other is a chemical change.

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Stirring dry yeast into a bowl of hydrogen peroxide
causes bubbles to form. Blowing air into a...
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