Worksheet: Covalent Structures

In this worksheet, we will practice describing common features of covalent structures and linking their material properties to their chemical structures.


Which of the following properties can generally be used to differentiate a molecular solid from a covalent network?

  • AElectrical conductivity
  • BMelting point
  • CColor
  • DChemical reactivity
  • EBrittleness


At room temperature and pressure, the most stable form of sulfur is the simple molecule S8. However, heating the material to a high temperature can produce continuous chains of sulfur atoms. Which term best describes the type of structure displayed by high-temperature sulfur?

  • AIonic
  • BMetallic
  • CAtomic
  • DSimple molecular
  • EGiant covalent


In solids displaying simple molecular structures, which type of bonding is typically present?

  • ACovalent
  • BMetallic
  • CIonic


Which feature of simple molecular covalent structures is responsible for their low melting and boiling points?

  • AStrong intermolecular forces
  • BInability to crystallize
  • CRepulsive intermolecular forces
  • DWeak intermolecular forces
  • ENo intermolecular forces


Which of the following is an example of a giant covalent structure?

  • AWater
  • BSodium chloride
  • CDiamond
  • DIron
  • ECarbon dioxide


Which of the following is a common property of giant covalent structures?

  • AFlexibility
  • BHigh density
  • CHigh elasticity
  • DHigh melting point
  • EColorfulness


Which of the following is not a typical characteristic of solids with a giant covalent structure?

  • AHigh water solubility
  • BHigh melting point
  • CLow electrical conductivity
  • DHigh level of hardness

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