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Types of solids (ionic, molecular, covalent network, metallic)

Chemistry • Solids, Liquids & Phase Changes • Transitional Reasoning • 1 questions

Types of solids (ionic, molecular, covalent network, metallic) Transitional Reasoning Download PDF

Chemistry · States of Matter & Solutions · Chemistry · Solids, Liquids & Phase Changes

1 Chemistry practice questions on Types of solids (ionic, molecular, covalent network, metallic). Questions that build towards applied reasoning.

Questions

  1. 1.

    A student investigates three unknown crystalline solids to classify their bonding types. Substance X is malleable and conducts electricity in the solid phase. Substance Y has a high melting point, fractures when struck, and conducts electricity only when melted or dissolved in water. Substance Z has a low melting point, sublimes readily, and does not conduct electricity under any test conditions. Which statement correctly identifies the solid classes and the nature of the forces holding these substances together?

    • A) Substance X is an ionic solid held by electrostatic attractions, whereas substance Y is a metallic solid held by delocalized electrons.
    • B) Substance Y is an ionic solid held by electrostatic attractions between ions, whereas substance Z is a molecular solid held by intermolecular forces.
    • C) Substance Z is a covalent network solid held by a continuous network of covalent bonds, whereas substance X is an ionic solid.
    • D) Substance Y is a covalent network solid held by directional covalent bonds, whereas substance Z is an ionic solid.