A complete summarised group of documents complete for GCSE Chemistry AQA 9-1. To make these Summaries I used 3 sources: The CGP revision guide, My GCSE Science Videos and Free science lessons videos. I achieved a 9 in GCSE AQA Triple Chemistry.
C2 Bonding, Structure and Properties
of Matter
Formation of Ions
Ions are charged particles (single atoms or compounds/molecules)
Atoms lose/gain electrons to get a full outer shell
METALS FORM POSITIVE IONS FROM LOSING ELECTRONS
NON-METALS FORM NEGATIVE IONS FROM GAINING ELECTRONS
Groups 1,2,6&7 are more likely to form ions
Group 1&2 form 1+/2+ ions
Group 7&6 form 1-/2- ions
Ionic Bonding
BONDING BETWEEN NON-METAL AND METAL
Electrostatic Attraction between oppositely charged ions
Dot and cross
diagrams show ionic
bonding
Ionic Compounds
Properties
Giant ionic Lattice Structure
Very strong electrostatic forces of attraction between oppositely charged ions
High melting and boiling points due to many strong bonds between ions, high temperature needed
to break bonds
Compounds can’t conduct electricity when solid because the ions
are not free to move
They can conduct electricity when melted as ions are free to move
Ionic compounds dissolve easily in water
In water an ionic solution can conduct electricity.
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