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?

  • ACovalent bond length
  • BThermodynamic stability at 1 atm and 298 K
  • CElectrical conductivity
  • DReactivity with hydrogen
  • EBond angle

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.
  • CThe melting temperature depends on the solvent content, which decreases slowly as the material is heated.
  • DThere is a large amount of variation in the strength of intermolecular interactions throughout the material.
  • EHeating causes the material to decompose, altering its melting temperature.

Q3:

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

  • AGraphite
  • B S i O 2
  • C N H N O 4 3
  • D F e
  • 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 C H C H C H C H 3 2 2 3
  • D S i C
  • E K P O 3 4

Q5:

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

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

Q6:

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

  • ABrittle
  • BLow melting point
  • CReacts with water
  • DSoft
  • EWhite

Q7:

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

  • ACovalent network
  • BMolecular crystal
  • CIonic lattice
  • DAmorphous solid
  • EMetal

Q8:

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

  • ACovalent network
  • BMolecular crystal
  • CMetal
  • DAmorphous solid
  • EIonic lattice

Q9:

A solid is brittle, white, and soluble in water. The melting point of the material is 800C and it is electrically conductive only if melted or dissolved. Which term best describes the structure of the material?

  • AMolecular crystal
  • BAmorphous solid
  • CCovalent network
  • DMetal
  • ESalt

Q10:

A solid is shiny, malleable, and insoluble in water. The material is highly electrically conductive and has a melting point of 1,100C. Which term best describes the structure of the material?

  • AAmorphous solid
  • BCovalent network
  • 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 3,550C. Which term best describes the structure of the material?

  • AMetal
  • BMolecular crystal
  • CSalt
  • DCovalent network
  • EAmorphous solid

Q12:

A solid is soft, black, shiny, and insoluble in water. The material is electrically conductive and sublimes at 3,642C. Which term best describes the structure of the material?

  • AAmorphous solid
  • BMolecular crystal
  • CSalt
  • DCovalent network
  • EMetal

Q13:

A solid is shiny, soft, and silvery blue in color. The material is electrically conductive and has a melting point of 30C. 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 272C. Which term best describes the structure of the material?

  • ASalt
  • BCovalent network
  • CMetal
  • DMolecular crystal
  • EAmorphous solid

Q15:

Which of the following statements concerning amorphous solids is false?

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

Q16:

Which of the following elements is the most metallic?

  • A C o
  • B C s
  • C S c
  • D A l
  • E B e

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