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When you crush a first-aid pack for an injured athlete, the pack gets cold.
Which statement is true?
A physical change has occurred, with energy being absorbed.
A chemical change has occurred, with energy being given off.
A physical change has occurred, with energy being given off.
A chemical change has occurred, with energy being absorbed.
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When you crush a first-aid pack for an injured athlete, the pack gets cold.
Which statement is true...
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