Chapter 2 - Physical Properties Of Bonds Flashcards
Why is an ionic compound brittle?
Ionic compounds are brittle because when a force is applied to its structure it distorts the structure of how the ions are positioned. Now ions of like charge are positioned next to each other, repelling, causing the compound the shatter/break apart.
What do ionic compounds have a high MP/BP?
Ionic compounds have a high MP/BP because ionic bonds are strong and a large amount of heat energy is required to separate the ions.
Why do ionic compounds not conduct electricity when solid, but do when molten?
As a solid, ionic compounds do not have mobile charged particles. Although when dissolved in water or molten ionic compounds will conduct electricity as the ionic lattice has been broken up and now the charged particles are free to move.
Why are metals malleable?
Because a distortion of the metallic lattice does not destroy the metallic structure.
Why are metals good conductors of electricity?
Because they have delocalised electrons within their structure (mobile charged particles)
Why do metals have a high MPBP?
Because metallic bonds are strong and a large amount of beat is required to separate the metallic particles
