Properties of Ionic Lattices

Question 1

What is a lattice

Answer 1

A lattice is a regular array of particles

Question 2

How are the lattices held together

Answer 2

The lattice is held together by the storng electrostatic attractions between postitively and negatively charged ions

Question 3

What are the physical properties of ionic substances/compounds?

Answer 3

• High melting and boiling points –> a lot of energy has to be supplied to break the strong electrostatic forces of attraction between oppositley charges ions
• Crystalline
• Brittle
• Soluble in water
• Insoluble in organic solvents

Question 4

Explain the electrical conductivity of ionic substances/compounds

Answer 4

• they don’t conduct electricity when they’re solid because the IONS are in a fixed postion and are not free to move around
• they conduct electricity when they are molten or if they are dissolved in water (in aqueous solution). This happens because the ions then become free to mov around