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ARC-Challenge / MDSA_2013_8_23 / A science teacher mixes two different substances in a plastic bag and seals the…

Problem

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question

A science teacher mixes two different substances in a plastic bag and seals the bag. The bag expands and breaks open. What is the most likely reason the bag expanded after the two substances were mixed?

choices

  • The substances became cooler and expanded.
  • The substances physically changed the plastic.
  • The substances became warm and stretched the bag.
  • The substances chemically reacted and produced a gas.

Discussion

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Source and history

upstream_id / Original problem ID
MDSA_2013_8_23
task_id
b67e01f4-e6b5-5c28-a1ea-6c8d81c3083e
task_key
ARC~2dChallenge--test--MDSA~5f2013~5f8~5f23
task_revision_id
1
config / split
ARC-Challenge / test

Official source

initial import