Giant Covalent Structures (AQA GCSE Chemistry): Flashcards
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Giant covalent structures definition
Giant covalent structures definition
Huge networks of atoms bonded by covalent bonds
Examples of giant covalent structures
Examples of giant covalent structures
Diamond, graphite, silicon dioxide (silica)
Melting/boiling points of giant covalent structures
Melting/boiling points of giant covalent structures
Very high
Why giant covalent structures have high melting points
Why giant covalent structures have high melting points
Strong covalent bonds require lots of energy to break
Electrical conductivity of most giant covalent structures
Electrical conductivity of most giant covalent structures
Do not conduct - no free-moving charged particles
Giant covalent structure that conducts electricity
Giant covalent structure that conducts electricity
Graphite
Structure of graphite
Structure of graphite
Layers of carbon atoms arranged in hexagons
Why graphite is soft and slippery
Why graphite is soft and slippery
Layers slide over each other due to weak forces between them
Bonds per carbon atom in graphite
Bonds per carbon atom in graphite
Three
Why graphite conducts electricity
Why graphite conducts electricity
Free electrons can move through the layers