Physics
Physics, 14.02.2020 00:59, asilverman

Which of the following is not an indication of a chemical reaction? 1. Two substances burst into flames on contact. 2. A substance freezes. 3. Bubbles form when two substances are combined. 4. A solid forms when two substances are combined.

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Which of the following is not an indication of a chemical reaction? 1. Two substances burst into fla...

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