You are tasked with identifying several rock samples. You are stumped by this sample. Your teacher has given you a hint. She tells you that it contains iron. You can now narrow your choices. But, you want to know if the rock contains hematite or magnetite.
Design a strategy to test what mineral is present.

A) Test to determine the hardness of the two samples; observe the colors.

B) Observe the shape of the crystals; observe the streak color from a streak test.

C) Observe the colors; do a streak test; see which sample is attracted to a magnet.

D) Observe the shape; determine the hardness of the two samples; observe the colors.

Question

05-04-2021
Biology

Answered

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You are tasked with identifying several rock samples. You are stumped by this sample. Your teacher has given you a hint. She tells you that it contains iron. You can now narrow your choices. But, you want to know if the rock contains hematite or magnetite.
Design a strategy to test what mineral is present.

A) Test to determine the hardness of the two samples; observe the colors.

B) Observe the shape of the crystals; observe the streak color from a streak test.

C) Observe the colors; do a streak test; see which sample is attracted to a magnet.

D) Observe the shape; determine the hardness of the two samples; observe the colors.

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