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  • What are the signs of a physical change 2024?

    signs change change

    Questioner:Lucas Evans 2023-04-20 15:38:08
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  • Emily Allen——Studied at University of California, Berkeley, Lives in Berkeley, CA

    There are four signs that a chemical reaction has occurred: a change in color, a change in temperature, formation of a gas or formation of a precipitate. A precipitate is a solid that forms when two liquid solutions are mixed. As matter changes in a chemical reaction, it can either absorb or release energy.read more >>
    +119962023-04-27 15:38:08

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