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ARC-Easy / Mercury_405107 / A student has a mineral sample. He wonders if the sample is the mineral mica. He…

Problem

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question

A student has a mineral sample. He wonders if the sample is the mineral mica. He knows the cleavage pattern of mica is a smooth, flat sheet. The student can best find out the cleavage pattern of the sample by

choices

  • shining a light on the mineral.
  • soaking the mineral in water.
  • rubbing a penny against the mineral.
  • breaking off a piece of the mineral.

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