Bonding Flashcards
A
I
Describe the bonding in metals.
Lattice of metal / +ve ions/ cations / atoms (1)
(Surrounded by) delocalised electrons (1)
Explain how metals conduct electricity.
(d)
(Delocalised) electrons (1)
Move / flow in a given direction (idea of moving non-randomly)
A
A
Suggest why silicon dioxide does not conduct electricity when molten.
No delocalised electrons
Deduce the empirical formula of graphane
CH
Suggest why graphene is an excellent conductor of electricity.
Delocalised electrons / free electrons
Able to move / flow (through the crystal)
Titanium can be hammered into objects with different shapes that have similar strengths.
Suggest why these objects with different shapes have similar strengths.
bonding re-formed / same (metallic) bonding / retains same (crystal) structure / same bond strength / same attraction between protons and delocalised electrons as before being hammered