Ionic Bonding Flashcards
What are ionic compounds?
Compound where metals and non metals are joined by ionic bonding.
What is a chemical bond?
Forces of attraction between atoms. They are all electrostatic, between positive and negative charges.
Why do atoms bond?
TO REACH FULL AND MORE STABLE CONFIGURATION
What are the 3 types of bonding?
Ionic metallic and covalent
What is ionic bonding?
Metals and non metals react together and transfer electrons from the low electronegative to high electronegative element. The resulting ions electrostatic-ally attract each other and form lattices. THe attraction between them is the ionic bond.
What is a name for an ionic compound?
Salt
What is a ionic network lattice?
3D array of positive metal ions and negative non metal ions held together by strong electrostatic attraction between the ions.
HOw is an ionic network lattice arranged?
In a regular repeating patternto achieve teh most stable arrangement. Opposite charged ions are as close as possible while same charged ions are as far away as possible.
What are the main properties of ionic compounds? 7
Crystalline solids High melt and b points Doesnt conduct in the solid form Conducts when molten Hard Dissolves in water Brittle
Why are ICS solids?
Because of the arrangement of the ions in repeating 3d pattern.
Why do ICS have high melt and b points?
Large amount of energy in required to seperate the ions.
Why don’t ICS conduct electricity when solid?
The ions cant move and carry the charge
You need to have mobile charged particles to conduct electricity.
Why are ICS hard?
Surface isnt easily scratched because of strong ionic bonds holding ions together.
Why do ICS dissolve in water to form ions?
Water molecules can move between the ions and disrupt the rigid crystal structure.
Why do ICS conduct electricity when molten or dissolved in aqueous solution?
MOLTEN- Ions are able to slide past each other and can therefore conduct electricity.
AQUEOUS- Ions dissociate from lattice and move freely.
