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PIT_PIT [208]
3 years ago
7

Which of the following is a sign a chemical reaction has occurred? A liquid changes to a solid when cooled. A liquid forms bubbl

es when heated. Two clear liquids combine and mix together. Two clear liquids combine and turn cloudy.
Chemistry
2 answers:
faust18 [17]3 years ago
6 0

The last one “two clear liquid combine and turn cloudy” shows visual evidence that the two have combined and changed.

3241004551 [841]3 years ago
3 0

The best answer is, “Two clear liquids combine and turn cloudy.”

When water freezes form a liquid to a solid. That’s a physical change.

When water boils, it forms bubbles. That’s a physical change.

When you mix ethanol and water, they form a clear solution. That’s a physical change.

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grigory [225]
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3 years ago
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Levart [38]

Answer:

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hope it helps.

6 0
2 years ago
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