(40) GCSE Chemistry Revision "Properties of Ionic Compounds"

Ionic Bonding

Occurs when a metal reacts with a non-metal, resulting in the transfer of electrons and the formation of ions.

Giant Ionic Lattice

A three-dimensional structure formed by ionic compounds where positive ions are surrounded by negative ions and vice versa.

Electrostatic Forces of Attraction

Strong forces that hold the positive and negative ions in a giant ionic lattice together; also known as ionic bonds.

Why do ionic compounds have high melting and boiling points?

Due to the strong electrostatic forces of attraction between the ions that require a large amount of energy to break.

Sodium Ion

The positively charged ion formed when a sodium atom loses one electron.

Chloride Ion

The negatively charged ion formed when a chlorine atom gains one electron.

Conductivity in Ionic Compounds

Ionic compounds cannot conduct electricity when solid because ions are locked in place, but can conduct when molten or in solution because ions are free to move.

Melting Point of Sodium Chloride

Approximately 800°C, due to the strong electrostatic forces requiring significant energy to break.

Ion

An atom with an overall charge, created when an atom gains or loses electrons.

Properties of Ionic Compounds

Includes high melting and boiling points and the ability to conduct electricity when molten or dissolved.