Bonding Flashcards
Metal + non metal
Ionic bonding
Ionic bonding is between what
Metal + non metal
Covalent bonding is between what
Non metals
Non metals and non metals. What bonding
Covalent bonding
Metallic bonding is between what
Metals
Metals and metals. What bonding
Metallic
Structure of ionic bonding
Giant 3D lattice
Covalent structure (simple molecular)
Separate molecules. Between them are intermolecular forces.
NOT BONDS
Covalent structure (macromolecular)
Giant lattice
Metallic structure
Lattice of positive ions surrounded by a sea of delocalised electrons
Ionic bonding
Attraction between oppositely charged ions
Covalent bonding (simple)
Strong covalent bonds
Covalent bonding (macro)
Lots of atoms held by strong covalent bonds
Metallic bonding
Lots of electrostatic attraction by sea of delocalised electrons
Ionic state at room temp
Solid
Covalent (simple) state at room temp
Gas / liquids
Covalent (macro) state at room temp
Solid
Metallic state at room temp
Solid
Mp of ionic
High
Ionic mp why?
Lots of energy needed to overcome strong ionic bonds
Covalent (simple) mp
Low
Why covalent mp (simple)
Weak intermolecular forces between molecules easy to overcome.
NOT BONDS
Covalent (macro) mp
High
Why covalent (macro) mp
Strong covalent bonds need to break