Properties of materials

How many covalent bonds can carbon form?

• Two

• Three

• Four

• Five

Why can carbon form a vast array of natural and synthetic organic compounds?

• Because it can form two covalent bonds

• Because it can form ionic bonds

• Because it can form families of similar compounds, chains, and rings

• Because it can form metallic bonds

What is a characteristic feature of diamond's structure?

• Each carbon is joined to 3 other carbons

• It is soft and slippery

• Each carbon is joined to 4 other carbons

• It can conduct electricity

What is a unique property of graphite that is similar to metals?

• It is very hard

• It has a high melting point

• It can conduct electricity

• It does not conduct electricity

What is the shape of the first fullerene to be discovered?

• Cylindrical

• Spherical

• Hexagonal

• Cubic

What makes carbon nanotubes useful for nanotechnology, electronics, and materials?

• Their ability to conduct electricity like diamond

• Their high length to diameter ratios and properties

• Their spherical shape

• Their soft and slippery nature

What is Graphene made of?

• A double layer of graphite

• A single layer of graphite

• A triple layer of carbon atoms

• A matrix of carbon nanotubes

What property of Graphene makes it useful in electronics and composites?

• Its opacity

• Its flexibility

• Its single layer structure

• Its properties that make it useful in electronics and composites

What happens when energy is transferred TO a compound?

• It freezes

• It melts or boils

• It condenses

• It sublimates

What happens when energy is transferred FROM a compound?

• It melts or boils

• It sublimates

• It condenses or freezes

• It reacts