What is a giant covalent structure?
A continuous network of atoms joined by covalent bonds throughout a solid, rather than separate small molecules.
AQA GCSE Combined Science: Trilogy (8464) — Chemistry — Higher · 5.2.2.6
Revise AQA GCSE Combined Science: Trilogy (8464) — Chemistry — Higher specification point 5.2.2.6, Giant covalent structures, with free active-recall flashcards. Flip through the set or review every question and answer below.
1 / 7
What is a giant covalent structure?
A continuous network of atoms joined by covalent bonds throughout a solid, rather than separate small molecules.
What are the typical physical state, melting point and boiling point of a giant covalent substance?
It is a solid with a very high melting point and usually a very high boiling point.
Why does melting or boiling a giant covalent substance require a large amount of energy?
Many strong covalent bonds must be overcome to separate the atoms sufficiently.
What diagram features identify a giant covalent structure?
A repeating, extended network of atoms joined by covalent bonds, rather than separate individual molecules.
How does diamond appear in a structure diagram?
A three-dimensional network of carbon atoms.
How does graphite appear in a structure diagram?
Layers of carbon atoms bonded in extended sheets.
How does silicon dioxide appear in a structure diagram?
A network of silicon and oxygen atoms linked throughout the structure.