Bonding Flashcards
Definition of ionic bonding.
Bonding due to the electrostatic attraction between a non-metal and metal, as they are oppositely charged as ions.
Definition of covalent bonding.
Bonding due to a shared pair of electrons between 2 non-metals.
Definition of metallic bonding.
Bonding due to the attraction between positive metal ions and a sea of delocalised electrons.
What kind of structure does ionic bonding make? What are their properties?
A giant ionic lattice.
They have a high melting point, due to the strong attraction between the molecules.
They’re also conductors when molten or in a solution as the ions are able to move.
For macro-molecular molecules, what shapes do they form and what are their properties?
Diamond/silicon and graphite.
Diamond/silicon have a high melting point, even despite having no intermolecular forces, because of the many strong covalent bonds.
Graphite has van der waals between layers of covalently bonded molecules, and this makes it slippery and this means it can be used as a dry lubricant. It’s also a conductor as it has delocalised electrons.
What are the properties of molecular molecules?
They have low boiling points due to weak van der waals between molecules.
What are the properties of metallic molecules?
High melting point due to the strong attraction between the molecules. Conductive due to the sea of delocalised electrons. Malleable due to the sliding layers of ions.
