Exploring Carbon Allotropes: Diamond and Graphite

What is an allotrope?

• Different elements in different physical states

• Different structural forms of the same element in the same physical state

• Different compounds in the same physical state

• Different elements in the same physical state

How many covalent bonds does each carbon atom form in diamond?

• Two

• Three

• Four

• Five

Why does diamond have a high melting point?

• It has free electrons

• It has weak bonds

• It has a regular 3D pattern

• It has strong covalent bonds

Why doesn't diamond conduct electricity?

• It has free electrons

• It has no free electrons or ions

• It has weak bonds

• It has a high melting point

How many covalent bonds does each carbon atom form in graphite?

• Two

• Three

• Four

• Five

What is the arrangement of carbon atoms in graphite?

• Tetrahedrons

• Hexagons

• Squares

• Pentagons

Why is graphite softer than diamond?

• It has a lower melting point

• It has weak bonds between layers

• It has fewer covalent bonds

• It has free electrons

What allows graphite to conduct electricity?

• Strong covalent bonds

• Free ions

• Delocalised electrons

• High melting point

What is a single layer of graphite known as?

• Fullerene

• Diamond

• Graphene

• Carbon nanotube

What will be explored in the next video?

• The structure of diamond

• The properties of graphite

• Graphene and fullerenes

• The melting point of carbon