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Worksheet: Covalent Structures

Q1:

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

  • AColor
  • BElectrical conductivity
  • CBrittleness
  • DMelting point
  • EChemical reactivity

Q2:

At room temperature and pressure, the most stable form of sulfur is the simple molecule S 8 . 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?

  • A Ionic
  • B Simple molecular
  • C Metallic
  • D Giant covalent
  • E Atomic

Q3:

Which of the following is not a characteristic of covalent solids?

  • ALow electrical conductivity
  • BHigh melting point
  • CHigh level of hardness
  • DHigh water solubility

Q4:

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

  • A Metallic
  • B Ionic
  • C Covalent

Q5:

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

  • ARepulsive intermolecular forces
  • BInability to crystallize
  • CStrong intermolecular forces
  • DWeak intermolecular forces
  • ENo intermolecular forces

Q6:

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

  • A Sodium chloride
  • B Carbon dioxide
  • C Iron
  • D Diamond
  • EWater

Q7:

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

  • A Colorfulness
  • B Flexibility
  • C High elasticity
  • D High melting point
  • E High density