Giant Covalent Structures & Metallic Bonding

What is the structure of graphite?

• Each carbon atom bonds with four others forming a tetrahedron

• Each carbon atom is bonded to three others forming layers of hexagons

• Each carbon atom is bonded to two others forming a linear chain

• Each carbon atom is isolated with no bonds

What type of structure do diamond and graphite have?

• Molecular structure

• Giant covalent structure

• Ionic structure

• Metallic structure

What is a key property of graphite?

• It is soluble in water

• It conducts electricity

• It is extremely hard and dense

• It does not conduct electricity

How many carbon atoms does each carbon atom in diamond bond with?

• Three

• Four

• Two

• Five

What is the primary reason diamond does not conduct electricity?

• It is a liquid at room temperature

• It has a metallic structure

• All outer shell electrons are held in covalent bonds

• It has free electrons

What is silicon(IV) oxide also known as?

• Silicon phosphate

• Silicon nitride

• Silica

• Silicon carbide

What type of bonding occurs in metals?

• Ionic bonding

• Covalent bonding

• Hydrogen bonding

• Metallic bonding

What is a characteristic property of metals?

• They are brittle

• They are malleable

• They are good insulators

• They have low melting points

What is the structure of silicon(IV) oxide?

• Molecular

• Metallic

• Macromolecular

• Ionic

What allows graphite to be used as a lubricant?

• Its electrical conductivity

• Its slippery layers

• Its low melting point

• Its high density