KS3 Structure and Bonding

Giant lattice structure held together by attraction between  positive and negatively charged ions 

• simple covalent molecules
• metallic
• ionic
• giant covalent 

Tags

NGSS.HS-PS1-3

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

• simple covalent molecules
• metallic
• ionic
• giant covalent 

Tags

NGSS.HS-PS1-3

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

• simple covalent molecules
• metallic
• ionic
• giant covalent 

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 

Conductors due to delocalised electrons

• simple covalent molecules
• metallic
• ionic
• giant covalent 

Tags

NGSS.HS-PS2-5

Melting points are generally high – lots of energy is needed to overcome the attractions between positive ions and delocalised electrons.  

• simple covalent molecules
• metallic
• ionic
• giant covalent 

Tags

NGSS.HS-PS1-3

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

• simple covalent molecules
• metallic
• ionic
• giant covalent 

Tags

NGSS.HS-PS1-3

Compounds containing a metal and non-metal.

• simple covalent molecules
• metallic
• ionic
• giant covalent 

Tags

NGSS.HS-PS1-3

Conductors due to delocalised electrons

• simple covalent molecules
• metallic
• ionic
• giant covalent 

Covalent compounds

• Share electrons
• transfer electrons
• contain a sea of electrons
• conduct electricity