Covalent Crystals Quiz

What type of atoms primarily make up the lattice points in covalent crystals?

• Metal atoms

• Non-metal atoms

• Metalloid atoms

• Noble gas atoms

Covalent crystals are held together by what type of bonds?

• Ionic bonds

• Metallic bonds

• Hydrogen bonds

• Covalent bonds

Which of the following is a characteristic of covalent crystals?

• Low melting point

• Soft texture

• High melting point

• High conductivity of heat and electricity

What is the empirical formula for Quartz?

• C

• SiO2

• C6

• SiC

Which of the following is not a property of covalent crystals?

• Varying conductivity of heat

• Always conductive of electricity

• Hard structure

• High melting point

What is the approximate distance between layers in Graphite?

• 335 nm

• 335 pm

• 3.35 pm

• 3.35 nm

What type of atoms occupy the lattice points in metallic crystals?

• Non-metal atoms

• Metalloid atoms

• Metal atoms

• Gas atoms

What type of bond holds metallic crystals together?

• Ionic bonds

• Covalent bonds

• Hydrogen bonds

• Metallic bonds

Which of the following is NOT a property of metallic crystals?

• Good conductors of heat and electricity

• Deformable: malleable and ductile

• Held together by metallic bonds

• Poor conductors of heat and electricity

What is the term used to describe the mobile electrons in metallic crystals?

• Fixed "sea"

• Mobile "ocean"

• Mobile "sea"

• Delocalized "river"