This definitions covers Key Definitions within Giant Covalent Structures for GCSE Chemistry. Revise Giant Covalent Structures in Bonding & Structure for GCSE Chemistry with 20 exam-style questions and 20 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 5 of 11 in this topic. Make sure you can use the exact wording confidently, because definition marks are often lost through vague language.
Topic position
Section 5 of 11
Practice
20 questions
Recall
20 flashcards
📖 Key Definitions
Giant covalent structure: A substance in which atoms are connected by covalent bonds extending in all directions throughout the solid, with no separate molecules and no fixed boundary.
Allotrope: A different structural form of the same element — diamond and graphite are allotropes of carbon.
Delocalised electron: An electron that is not fixed to any particular atom but can move freely through the structure, enabling electrical conduction.
Fullerene: A molecular form of carbon forming a hollow cage structure (e.g., C₆₀ — buckminsterfullerene); can be used to deliver drug molecules into the body.
Graphene: A single layer of graphite — a two-dimensional sheet of carbon atoms in a hexagonal arrangement; extremely strong and conducts electricity.