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TO PERFORM ON ROCKS
Some rocks can be identified and sorted by the way they respond to magnets or certain chemicals. Rocks that contain iron respond to magnets.
have magnetic properties (e.g., magnetite, lodestone) attract pieces of
iron. This writer wonders: if there were an area that held several large
Limestone and marble react to the vinegar test. (They bubble and make a fizzing sound when vinegar is poured on them.)
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