During a deep-space mining expedition, explorers discover a solid mineral that exhibits a lustrous metallic sheen but shatters easily when struck with a hammer. Laboratory tests show that while it conducts electricity poorly at freezing temperatures, its electrical conductivity surges dramatically when heated. Based on the organization and properties of elements in the periodic table, which category of elements does this specimen best represent?

A) A typical metal, because its lustrous surface confirms the presence of metallic bonding throughout the crystal.

B) A metalloid, because it combines metallic luster and brittleness with semiconductor-like electrical properties.

C) A reactive nonmetal, because brittle fracture is an exclusive property that rules out any metallic classification.

D) A noble gas, because solid minerals that conduct electricity at elevated temperatures belong to group 18.

Metals, nonmetals and metalloids Original Scenario-Based Practice

Chemistry · The Periodic Table · Chemistry · Organization of the Periodic Table

1 Chemistry practice questions on Metals, nonmetals and metalloids. Questions built around original scenarios.

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The Periodic Table · Chemistry

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