Allotropes Flashcards
What does Graphite bond to
Each carbon covalently bonded to 3 others
Graphite electrons
1 delocalised electron free to carry charge(electrodes)
Graphite forces
Weak intermolecular forces between the layers, easily broken so layers slide( pencils, lubricant)
Graphite melting point
High melting point because they have strong covalent bonds
Graphite uses
Pencils ,lubricant ,electrodes
Diamond bonds
Each carbon covalently bonded to 4 others
Diamond conductivity
Doesn’t conduct electricity because there are no free electrons
Why is diamond a hard substance
Because it has strong covalent bonds
Diamond melting point
High melting point because strong covalent bonds require lots of energy to break
Diamond uses
Jewellery, cutting tools
Fullerences melting point
Low melting and boiling points because there are weak intermolecular forces between molecules
Fullerenes covalent bond
Each carbon covalently bonds to 3 others
What is fullerenes
Simple molecule
Graphene properties
Single layer of graphite, 1 atom thick
Why does graphene conduct across surfaces
Because of delocalised electrons
Graphene covalent bonds
Each carbon covalently bonds to 3 others
Graphene melting point
High melting point as strong covalent bonds require lots of energy to break
Properties of metals
Conducts heat
Conducts electricity
Solid at room temperature because it has a very high melting point
Shiny
Malleable(can be shaped)
Ductile(can be drawn into wires)
Sonorous( ringing sound if hit)
Dense
