Topic 2 - Bonding And Structure Flashcards
What is metallic bonding
Attraction between positive metal ions and delocalized elections
Ionic bonding
Attractions between oppositely charged ions (one positive and one negative ion)
Covalent bonding
The sharing of elections to gain a full outer shell
Why do ionic compounds have a point
They have strong ionic bonds, which require a lot of energy to overcome
What do you need to be able to conduct electricity
A particle that can hold charge (ions or electrons) and is free to move throughout the structure
Why can metals conduct electricity
They have delocalized elections
Why can’t solid ionic compounds conduct?
The ions are not free to move
When can ionic compounds conduct electricity? And why?
When they are molten or dissolved in water. Because the ions are then free to move.
What type elements form ionic compounds
A metal and a non metal
What type of compounds can form covalent bonds?
Nonmetals
What is the name of her forces that hold covalent molecules together
Intermolecular forces
Are intermolecular forces strong or weak? How does this affect the boiling point?
They are very weak. They require very little energy to overcome
