GCSE Chemistry - Allotropes of Carbon - Diamond and Graphite #18

The video tutorial explains the concept of allotropes, focusing on carbon's allotropes: diamond, graphite, graphene, and fullerenes. It describes the structural differences and properties of diamond and graphite, highlighting diamond's strong covalent bonds and high melting point, and graphite's layered structure and electrical conductivity. The video also introduces graphene as a single layer of graphite and mentions fullerenes as carbon nanostructures to be explored further in the next video.

What is an allotrope?

• A different structural form of the same element in the same state

• A mixture of different elements

• A different element in a different state

• A compound formed by different elements

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

• Five

• Four

• Two

• Three

Why doesn't diamond conduct electricity?

• It has free electrons

• It has no free electrons or ions

• It has a metallic structure

• It has a low melting point

What allows graphite to conduct electricity?

• Its high melting point

• Strong covalent bonds

• Its hexagonal structure

• Delocalized electrons

What is a single layer of graphite called?

• Graphene

• Fullerene

• Carbon nanotube

• Diamond