Year 11 Science - Giant covalent structures

Year 11 Science - Giant covalent structures

Multiple Choice

Why does graphite conduct electricity?

• Ions are free to move to carry the charge

• Atoms can move

• Free electrons that can carry the charge

Multiple Choice

What element are diamond and graphite made up of?

• A.     Sodium
• B.     Carbon
• C.     Carbon dioxide
• D.     Silicon

Multiple Choice

Why is diamond strong?

• It's made of carbon
• It doesn't conduct electricity
• It forms 4 strong covalent bonds
• So it can cut glass

Multiple Choice

What structure is shown in the diagram?

• Diamond
• Graphite
• Carbon fiber
• Carbon nanotubes

Multiple Choice

Formulae of these might include H₂O
each molecule contains 1 O and 2H atoms 

• simple covalent molecules
• metallic
• ionic
• giant covalent 

Multiple Choice

Melting points are very high – a large amount of energy is needed to break all the covalent bonds

• simple covalent molecules
• metallic
• ionic
• giant covalent 

Multiple Choice

Low melting and boiling points which increase with increasing molecule size due to increased intermolecular forces.

• simple covalent molecules
• metallic
• ionic
• giant covalent 

Multiple Choice

Elements such as  Silicon, diamond and graphite.  Compounds include  SiO₂

• simple covalent molecules
• metallic
• ionic
• giant covalent