Worksheet: Molecular, Network, Ionic, and Metallic Solids

In this worksheet, we will practice comparing the properties and examining examples of molecular, network, ionic, and metallic solids.

Q1:

Which of the following quantities is larger in diamond than in graphite?

  • AElectrical conductivity
  • BBond angle
  • CReactivity with hydrogen
  • DCovalent bond length
  • EThermodynamic stability at 1 atm and 298 K

Q2:

Why does an amorphous solid typically melt over a wide range of temperatures?

  • AThe material contains a mixture of compounds with different melting temperatures.
  • BA solid-solid phase transition results in a crystalline material with a higher melting temperature.
  • CHeating causes the material to decompose, altering its melting temperature.
  • DThere is a large amount of variation in the strength of intermolecular interactions throughout the material.
  • EThe melting temperature depends on the solvent content, which decreases slowly as the material is heated.

Q3:

Which of the following is an ionic solid at room temperature and pressure?

  • A F e
  • B S i O 2
  • CGraphite
  • D N H N O 4 3
  • E H C l

Q4:

Which of the following is a covalent network solid at room temperature and pressure?

  • A C a C l 2
  • B N 2
  • C K P O 3 4
  • D S i C
  • E C H C H C H C H 3 2 2 3

Q5:

Which of the following is not a typical property of metals?

  • AHigh malleability
  • BHigh ductility
  • CHigh electrical conductivity
  • DHigh aqueous solubility
  • EHigh melting point

Q6:

Which of the following properties is most likely to indicate that a material is non-metallic?

  • ASoft
  • BBrittle
  • CReacts with water
  • DWhite
  • ELow melting point

Q7:

Which of the following terms best describes the most stable solid form of oxygen?

  • AMetal
  • BIonic lattice
  • CCovalent network
  • DMolecular crystal
  • EAmorphous solid

Q8:

Which of the following best describes the structure of paraffin wax?

  • AMetal
  • BIonic lattice
  • CCovalent network
  • DAmorphous solid
  • EMolecular crystal

Q9:

A solid is brittle, white and soluble in water. The melting point of the material is 8 0 0 C and it is electrically conductive only if melted or dissolved. Which term best describes the structure of the material?

  • ACovalent network
  • BMetal
  • CMolecular crystal
  • DSalt
  • EAmorphous solid

Q10:

A solid is shiny, malleable and insoluble in water. The material is highly electrically conductive and has a melting point of 1 1 0 0 C . Which term best describes the structure of the material?

  • ACovalent network
  • BAmorphous solid
  • CMolecular crystal
  • DMetal
  • ESalt

Q11:

A solid is hard, colorless and insoluble in water. The material is an electrical insulator and has a melting point of 3 5 5 0 C . Which term best describes the structure of the material?

  • AMetal
  • BAmorphous solid
  • CMolecular crystal
  • DCovalent network
  • ESalt

Q12:

A solid is soft, black, shiny and insoluble in water. The material is electrically conductive and sublimes at 3 6 4 2 C . Which term best describes the structure of the material?

  • AMetal
  • BAmorphous solid
  • CMolecular crystal
  • DCovalent network
  • ESalt

Q13:

A solid is shiny, soft and silvery blue in colour. The material is electrically conductive and has a melting point of 3 0 C . Which term best describes the structure of the material?

  • ACovalent network
  • BAmorphous solid
  • CMolecular crystal
  • DMetal
  • ESalt

Q14:

A solid is shiny, soft and brownish silver in color. The material is electrically conductive and has a melting point of 2 7 2 C . Which term best describes the structure of the material?

  • ACovalent network
  • BAmorphous solid
  • CMolecular crystal
  • DMetal
  • ESalt

Q15:

Which of the following statements concerning amorphous solids is false?

  • AAmorphous solids are said to behave as supercooled liquids, leading to an ease in transitioning between physical states.
  • BUnlike crystalline solids, amorphous solids tend to lose structural organization as their lattices extend.
  • CThe formation of amorphous solids is aided by the rapid cooling of a molten compound.
  • DUnlike crystalline solids, amorphous solids lack a repeating unit cell, leading to a random organization of atoms.

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