During an expedition to an uncharted crystal cavern, an explorer collects a dense, iridescent specimen to identify its characteristics. In the mobile laboratory, the explorer records that the sample melts at 412 °C, reflects deep violet light, fractures along neat planar cleavage planes when tapped, and releases bubbles of hydrogen gas when exposed to dilute hydrochloric acid. Which of the explorer's recorded observations demonstrates a chemical property of the specimen?

A) Melting into a clear liquid at 412 °C

B) Reflecting deep violet light

C) Fracturing cleanly along structural cleavage planes

D) Releasing hydrogen gas upon contact with dilute hydrochloric acid

Physical and chemical properties Original Scenario-Based Practice

Chemistry · Matter · Chemistry · Properties & Changes of Matter

1 Chemistry practice questions on Physical and chemical properties. Questions built around original scenarios.

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Matter · Chemistry

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