A cold pack is broken, allowing two chemical substances to mix, making the pack cold. Which statement accurately describes the flow of energy in this reaction?
Both of the substances are present at the end of the reaction, each with more energy than before the reaction.
The surroundings gain energy from the system.
The system gains energy from the surroundings.
Energy flows from one of the substances to the other with no change in energy of the system.
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A cold pack is broken, allowing two chemical substances to mix, making the pack cold. Which statemen...
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