Ücretsiz Kullanmaya Başla

Properties of ionic compounds Original Scenario-Based Practice

Chemistry · Chemical Bonding & Molecular Structure · Chemistry · Ionic Bonding

1 Chemistry practice questions on Properties of ionic compounds. Questions built around original scenarios.

Layout:

Choose how questions appear in the preview and test.

Preview the questions below, then start to answer and see your results.

Questions

  1. 1.

    During an expedition into an active volcanic cavern, geochemists discover a translucent mineral specimen termed Pyrocryst. Laboratory tests reveal that striking Pyrocryst with a geological hammer causes it to shatter abruptly into sharp, flat fragments rather than denting. Although a solid crystal of Pyrocryst fails to conduct an electric current, heating the mineral until it liquefies permits an electric current to flow effortlessly through it. Which fundamental characteristic of an ionic lattice accounts for both of these observed properties?

    • A) A delocalized sea of valence electrons allows thermal mobility when heated but locks into rigid, directional covalent networks under mechanical impact.
    • B) Weak intermolecular dispersion forces between neutral molecules permit crystalline planes to slide past one another until thermal cleavage occurs.
    • C) Strong electrostatic attractions between alternating cations and anions lock ions in place in the solid, while mechanical shear forces like-charged ions into adjacent alignment, causing brittle fracture.
    • D) Discrete neutral ion pairs dissociate into mobile uncharged atoms upon melting, whereas external impact converts ionic attractions into temporary metallic bonds.

Answers and step-by-step solutions appear after you finish the test.