First 389 words of the document:
Different types of bonding!
These are made from my notes and sentences from the mark schemes of different
questions so make sure you're using all the key words to ensure you reach the high
marks! There is normally a simple question which you can easily get full marks on if
you learn all the info below..GOOD LUCK GUYZZZ! Print this out and stick it by your
bed to read every night aweek before your exam and you should be fine ..enjoy;)
IONIC BONDING- loss or gain of electrons to form charged ions.
It's between non-metals and metals. Metals loose electrons to form a positive charge
and non-metals gain electrons to form a negative charge.
The electrostatic attraction between oppositely charged ions. In a regular lattice
arrangement. They have very high melting and boiling points as of the strong
electrostatic forces of attraction you need a large amount of energy to make the ions
(simple) COVALENT BONDING- between non-metals!
They form strong covalent bonds of attraction in which they share their electrons.
They have low boiling and melting points as they have week intermolecular forces of
attraction so are very easy to break these. They don't conduct electricity as there are
no free electrons or ions to carry charge.
These macromolecules are formed by giant structures by lattice of sharing pairs of
electrons. They have a very strong covalent bond!! High boiling and melting points as
of their strong covalent bonds are hard to break and need a lot of energy to do so.
They don't conduct electricity although graphite does as it has the delocalised
electrons from how each carbon is joined to three other carbons so one electron from
each atom is free and delocalised!
Metal ions surrounded by a sea of electrons forming giant structures, there is an
electrostatic attraction between metal ions and electrons.
They too have a high melting and boiling point as of the strong electrostatic
attractions need a lot of energy to break and the delocalised electrons make it easy to
conduct electricity as free to move and carry on the charge.