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ARC-Easy / Mercury_7013843 / A hot pack is a product that releases heat when chemicals inside of it interact.…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

A hot pack is a product that releases heat when chemicals inside of it interact. What is taking place inside an active hot pack?

choices

  • electric current
  • a net loss of mass
  • thermal insulation
  • an exothermic reaction

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Source and history

Official source

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