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32 votes
A student mixes some water at room temperature with a white powder also at room temperature. The white powder disappears into the water, and bubbles form. The solution warms up to 30 ℃. Is this likely a physical or a chemical change? Explain your answer.

User Tan Rezaei
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1 Answer

16 votes
16 votes
Chemical change, because the white powder heated the water and caused a thermal reaction, and possibly gas was produced due to bubbles.
User ChrisInCambo
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