2.1.3 And 2.2.3 Ionic Compounds And Properties Of Ionic Compounds Flashcards
Properties of giant ionic structure(4p):
-Soluble in water
- High melting and boiling point
- Solid at room temperature
- Can only conduct electricity when molten or aqueous
Advantages of dot and cross diagram
It is useful for showing how ionic compounds are formed
Disadvantages of dot and cross diagram (3p)
- Doesn’t show the structure of the diagram
- Doesn’t show the size of the ions - Doesn’t show how the ions are arranged
Advantages of 3D model (2p)
Shows the relative size of an ions
-Shows the regular pattern of an ionic crystal
Disadvantages of ball ans stick model
- Isn’t to scale
- Shows gaps between ions
Disadvantages of 3D model
Only let’s you see the outer layer of thr compound
Advantages of ball and stick model
Shows regular pattern of ionic crystal and how the ions are arranged
What is a lattice?
When ions have regular, repeating arrangement
Why do giant ionic structures conduct electricity when molten ?
When melted, the ions are free to move, and they’ll carry charge
Why do giant ionic structures conduct electricity when aqueous?
When dissolved, the ions separate and are free to move so they’ll carry charge
Why do giant ionic structures have a high boiling and melting point?
A large amount of energy is needed to break the strong bonds
