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What are nanotubes BBC Bitesize?

What are nanotubes BBC Bitesize?

Nanotubes. Nanotubes are a type of fullerene and are molecular-scale tubes of carbon arranged similarly to the layers in graphite. Carbon nanotubes have a very high melting point, as each carbon atom is joined to three other carbon atoms by strong covalent bonds.

Why are nanotubes useful?

CNTs can act as antennas for radios and other electromagnetic devices. Conductive CNTs are used in brushes for commercial electric motors. They replace traditional carbon black. The nanotubes improve electrical and thermal conductivity because they stretch through the plastic matrix of the brush.

Is nanotube simple molecular?

Nanotubes are essentially a single layer of graphite (or a molecule of graphene) wrapped around to form an elongated tube-like molecule, they only consist of hexagonal rings throughout the sides of the nanotubes.

Why is buckminsterfullerene a good lubricant AQA GCSE?

There are weak intermolecular forces between molecules of buckminsterfullerene. These need little energy to overcome, so buckminsterfullerene is slippery and has a low melting point.

What is an allotrope BBC Bitesize?

Allotropes are different forms of an element in the same physical state. Diamond and graphite are allotropes of carbon. They both consist of giant covalent structures in which very many carbon atoms are joined together by covalent bonds .

Is a buckyball a nanoparticle?

Any material at the nanoscale is a nanoparticle. Buckyballs, also called fullerenes, were one of the first nanoparticles discovered. Other sizes of buckyballs range from those containing 20 carbon atoms to those containing more than 100 carbon atoms. …

Why are nanotubes strong GCSE?

Nanotubes have high tensile strength , so they are strong in tension and resist being stretched. Like graphene, nanotubes are strong and conduct electricity because they have delocalised electrons.

Are nanotubes simple molecular?

They are NOT considered giant covalent structures and are classed as relatively small simple molecules, even though fullerenes have the general formula Cn!

What are nanotubes GCSE chemistry?

Nanotubes. A nanotube is like a layer of graphene, rolled into a cylinder. Nanotubes have high tensile strength , so they are strong in tension and resist being stretched. Like graphene, nanotubes are strong and conduct electricity because they have delocalised electrons.