Structure and bonding of carbon key terms

diamond

In Diamond, diamond means a giant covalent structure made from carbon atoms. This matters in Structure and bonding of carbon because it supports the learning objective to describe diamond as a giant covalent structure made from carbon atoms. Use diamond only in this subtopic-relevant sense so the definition stays concise, curriculum-specific, and useful for AQA GCSE Biology revision. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

giant covalent structure

A large network of atoms bonded together by covalent bonds, exemplified by diamond.

Covalent bond

In Diamond, Covalent bond means a strong bond formed when two atoms share one or more pairs of electrons. This matters in Structure and bonding of carbon because it supports the learning objective to explain that each carbon atom in diamond forms four covalent bonds. Use Covalent bond only in this subtopic-relevant sense so the definition stays concise, curriculum-specific, and useful for AQA GCSE Biology revision. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

Diamond

A giant covalent structure made from carbon atoms, where each carbon atom forms four covalent bonds.

giant covalent structure

A structure where atoms are bonded by covalent bonds in a continuous network, resulting in high hardness and melting points.

covalent bonds

Strong bonds formed when atoms share pairs of electrons, contributing to the stability and properties of substances like diamond.

high melting point

The temperature at which a solid becomes a liquid, indicating strong bonding forces in the material.

giant covalent structure

A large network of atoms bonded together by covalent bonds, resulting in strong materials like diamond.

diamond

A giant covalent structure made from carbon atoms, where each carbon atom forms four covalent bonds.

electrical conductivity

The ability of a material to conduct electricity, which diamond lacks due to the absence of free-moving charged particles.

Graphite

In Graphite, Graphite means a giant covalent structure made from carbon atoms arranged in layers of hexagonal rings. This matters in Structure and bonding of carbon because it supports the learning objective to describe graphite as a giant covalent structure made from carbon atoms. Use Graphite only in this subtopic-relevant sense so the definition stays concise, curriculum-specific, and useful for AQA GCSE Biology revision. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

Giant covalent structure

A large network of atoms bonded together by covalent bonds, resulting in strong materials like graphite.

Graphite

A giant covalent structure made from carbon atoms where each carbon atom forms three covalent bonds.

Covalent bond

In Graphite, Covalent bond means a chemical bond formed by the sharing of electron pairs between atoms. This matters in Structure and bonding of carbon because it supports the learning objective to explain that each carbon atom in graphite forms three covalent bonds. Use Covalent bond only in this subtopic-relevant sense so the definition stays concise, curriculum-specific, and useful for AQA GCSE Biology revision. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

Graphite

A giant covalent structure made from carbon atoms arranged in layers of hexagonal rings with no covalent bonds between the layers.

Hexagonal rings

The arrangement of carbon atoms in graphite that forms layers, contributing to its unique properties.

delocalised electron

An electron that is not associated with a single atom or bond and can move freely within a structure, such as in graphite.

graphite

A giant covalent structure made from carbon atoms, where each carbon atom forms three covalent bonds and has layers of hexagonal rings.

Graphite

A giant covalent structure made from carbon atoms, where each carbon atom forms three covalent bonds and has one delocalised electron.

Delocalised electrons

Electrons in graphite that are free to move between layers, allowing it to conduct electricity.

delocalised electrons

Electrons that are not associated with a single atom or bond and can move freely within a structure, contributing to electrical conductivity.

graphite

A giant covalent structure made from carbon atoms arranged in layers of hexagonal rings, with delocalised electrons between the layers.

Graphite

A giant covalent structure made from carbon atoms, consisting of layers of hexagonal rings with delocalised electrons.

Delocalised electrons

Electrons that are not bound to a specific atom and can move freely, contributing to the electrical conductivity of materials like graphite.

Graphene

A single layer of graphite consisting of carbon atoms arranged in a two-dimensional hexagonal lattice.

Giant covalent structure

A large structure where atoms are bonded together by covalent bonds in a continuous network.

Graphene

A single layer of carbon atoms arranged in a hexagonal lattice, known for its exceptional electrical conductivity and strength.

Delocalised electrons

Electrons that are not associated with a single atom or bond and can move freely, contributing to the electrical conductivity of materials like graphene.

fullerenes

In Graphene and fullerenes, fullerenes means hollow molecules made from carbon atoms. This matters in Structure and bonding of carbon because it supports the learning objective to describe fullerenes as hollow molecules made from carbon atoms. Use fullerenes only in this subtopic-relevant sense so the definition stays concise, curriculum-specific, and useful for AQA GCSE Biology revision. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

hollow molecule

In Graphene and fullerenes, hollow molecule means a structure that has a cavity or empty space within it, formed by atoms. This matters in Structure and bonding of carbon because it supports the learning objective to describe fullerenes as hollow molecules made from carbon atoms. Use hollow molecule only in this subtopic-relevant sense so the definition stays concise, curriculum-specific, and useful for AQA GCSE Biology revision. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

fullerene

In Graphene and fullerenes, fullerene means a hollow molecule made from carbon atoms, often structured in hexagonal rings. This matters in Structure and bonding of carbon because it supports the learning objective to explain that fullerene structures are based mainly on hexagonal rings and may include rings with five or seven carbon atoms. Use fullerene only in this subtopic-relevant sense so the definition stays concise, curriculum-specific, and useful for AQA GCSE Biology revision. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

hexagonal ring

A ring structure consisting of six carbon atoms, commonly found in fullerene and graphene structures.

Buckminsterfullerene

In Graphene and fullerenes, Buckminsterfullerene means a spherical fullerene molecule composed of 60 carbon atoms, also known as C60. This matters in Structure and bonding of carbon because it supports the learning objective to identify Buckminsterfullerene, C60, as a spherical fullerene. Use Buckminsterfullerene only in this subtopic-relevant sense so the definition stays concise, curriculum-specific, and useful for AQA GCSE Biology revision. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

fullerene

A class of carbon molecules that can form hollow structures, including spherical and cylindrical shapes.

carbon nanotube

In Graphene and fullerenes, carbon nanotube means a cylindrical fullerene with a very high length to diameter ratio. This matters in Structure and bonding of carbon because it supports the learning objective to describe carbon nanotubes as cylindrical fullerenes with very high length to diameter ratios. Use carbon nanotube only in this subtopic-relevant sense so the definition stays concise, curriculum-specific, and useful for AQA GCSE Biology revision. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

fullerene

In Graphene and fullerenes, fullerene means a hollow molecule made from carbon atoms, including structures like Buckminsterfullerene. This matters in Structure and bonding of carbon because it supports the learning objective to describe carbon nanotubes as cylindrical fullerenes with very high length to diameter ratios. Use fullerene only in this subtopic-relevant sense so the definition stays concise, curriculum-specific, and useful for AQA GCSE Biology revision. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

Graphene

In Graphene and fullerenes, Graphene means a single layer of carbon atoms arranged in a hexagonal lattice. This matters in Structure and bonding of carbon because it supports the learning objective to recognise graphene and fullerenes from diagrams and descriptions of their bonding and structure. Use Graphene only in this subtopic-relevant sense so the definition stays concise, curriculum-specific, and useful for AQA GCSE Biology revision. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

Fullerenes

Hollow molecules made from carbon atoms, including structures like Buckminsterfullerene, C60.

fullerene

Hollow molecules made from carbon atoms, including structures like Buckminsterfullerene, C60.

carbon nanotube

Cylindrical fullerenes with very high length to diameter ratios, used in nanotechnology and electronics.