Giant Covalent Structures Flashcards
Many Covalently Bonded Substances are Made Up of ____________ Molecules.
Individual.
Diamond has a Relatively Small Number of _______ that are Arranged in ________ Molecules. They Form Huge Networks of Atoms Held Together by _________ Covalent Bonds in Giant Covalent Structures.
Atoms…Small…Strong…
Having a Giant Covalent Structure Gives Substances Which Three Special Properties?
- They have High Melting and Boiling Points.
- They’re Insoluble in Water.
- Apart From Graphite, they’re Hard and don’t Conduct Electricity.
Carbon isn’t Always Found in Diamonds, Another Form is __________.
Graphite.
In Graphite, Carbon Atoms are Only Bonded to ________ Other Carbon Atoms, they Form Hexagons which are Arranged in ________ Layers. There are no Covalent Bonds Between the Layers, Only Weak ____________________ Forces.
Three…Giant…Intermolecular…
Carbon Atoms have ______ Electrons in their Outer Shell Available for Bonding, Leaving ______ Spare on Each Carbon Atom in Graphite.
Four…One…
Mobile Electrons can Move __________ Along the Layers of Carbon Atoms. Mobile Electrons Found in Graphite are Called _____________ Electrons.
Freely…Delocalised…
Delocalised Electrons Allow ____________ to Conduct Electricity.
Graphite.
Graphite is an Excellent Conductor of ____________ Energy.
Thermal.
