Please enable JavaScript.
Coggle requires JavaScript to display documents.
C2 (Ions (Ions are atoms which have either lost or gained electrons., If…
C2
-
Covalent Bonding
Covalent bonds share electrons to gain a full outer shell. It only occurs between non-metals. Hydrogen atoms share one electron, oxygen atoms share two electrons, nitrogen atoms share three electrons and carbon atoms share four electrons.
In order to draw covalent bonds you can use a dot and cross diagram or you can use the displayed formula.
Simple molecular substances contain covalent bonds. These substances have very weak molecular forces meaning that they don't require much energy to become a liquid or gas, causing a low melting/boiling point.
-
Ionic Bonding
Ions of negative charges are attracted to those of positive charges. Opposites attract. Like charges repel.
-
-
-
-
Allotropes of Carbon
Diamond is very hard. Each carbon atom is covalently bonded four times. These covalent bonds give diamond a very high melting point.
Graphite contains carbon bonds with three covalent bonds each. This means there is still a free electron for each carbon atom. It is made of layers of graphene which is one sheet of graphite. These layers have weak intermolecular forces between them.
