Flashcards
Ionic Bonding and Structure
Flashcards do conjunto (11)
- 1Define the term 'Ionic Bonding'Ionic Bonding is the electrostatic attraction between two oppositely charged ions
- 2Where does ionic bonding occur?Between a metal and non-metal
- 3AnionsNegative Ions:
Cl 1-
O2 1-
NO3 1-
SO4 2- - 4CationsPositive Ions:
Na +
Al 3+
Ca 2+
NH4 + - 5What is formed from ionic bonding?A positive ion and a negative ion
- 6Structure of Ionic CompoundsEach ion attracts opposite charged ions in all directions. As a result, a giant ionic lattice is formed that can contain billions of ions.
- 7Melting and Boiling points of giant ionic compoundsAlmost all ionic compounds are solid at room temperature as there isn't enough energy to break the strong electrostatic forces of attraction between the oppositely charged ions. So basically, high temperatures are needed to break the strong electrostatic forces = high melting/boiling point.
- 8Giant Ionic Lattice - Solubility with smaller chargesMost ionic compounds dissolve in polar solvents such as water. This is due to the polar water molecules which break down the lattice and surround each ion in the solution
- 9Giant Ionic Lattice - Solubility with larger chargesIf there is a compound made with stronger/larger charges, the ionic attraction may be too strong for water to break down the lattice structure. So if a giant ionic compound has large charges, it isn't very soluble
- 10Giant Ionic Compounds - Electrical conductivity in a solid state- The ions are in a fixed position in the giant ionic lattice
- No free charge carriers so the circuit is incomplete and an electrical charge cannot flow - 11Giant Ionic Compounds - Electrical conductivity in a liquid/aqueous state- The solid ionic lattice is broken down
- The ions are now free as charge carriers, the circuit is complete and an electrical charge can flow.
Informações
- Descrição
- AS - Level Chemistry (5 - Electrons and Bonding) FlashCards sobre Ionic Bonding and Structure, criado por Bee Brittain em 20-04-2016.
- Criado por
- Bee Brittain · abr 2016
- Atualizado
- 2 out 2016
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