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ARC-Challenge / Mercury_7131530 / A student mixed some yellow sulfur powder with some iron filings. She was able…

Problem

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

question

A student mixed some yellow sulfur powder with some iron filings. She was able to take the iron out of the sulfur by using a magnet. She then remixed the iron and sulfur in a test tube and heated it. After it cooled, she removed the substance from the test tube but could not separate the iron from the sulfur using the magnet. Which type of change occurred in the material when it was heated?

choices

  • a physical change because the iron reacted with the sulfur
  • a chemical change because a new substance was formed
  • a physical change because a compound was formed
  • a chemical change because a magnet had to be used

Discussion

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Source and history

upstream_id / Original problem ID
Mercury_7131530
task_id
b8c61825-d65e-55cd-9369-eeb01f34583e
task_key
ARC~2dChallenge--test--Mercury~5f7131530
task_revision_id
1
config / split
ARC-Challenge / test

Official source

initial import