ES - CI5.1 Ions in Solids and Solutions

• Positive ions (cations ) attract the negative ions (anion) to build a giant ionic lattice
• eg.  Sodium Chloride Na+Cl- (s)

Hydrated Crystals

• Ionic solids include water
• H2O is fitted into the lattice
• So regular pattern of 3 molecules eg. Mg+, Cl- and H2O
• Water = water of crystallisation
• Crystals = hydrated crystals
• Hydrated crystals are heated so water leaves as steam producing anhydrous soild

Ionic Substances in Solution

• Dissolve…