Bonding Flashcards
(9 cards)
What is covalent bonding?
A bond between non metals formed when two positive nuclei are held together by their common attraction for a shared pair of electrons.
What are some features of covalent molecular substances?
They have strong covalent bonds within the molecule but weak attractions between the molecules. They have low melting and boiling points. They don’t conduct electricity and are insoluble in water.
What are some features of covalent network structures?
They have strong covalent bonds within one giant structure. They have a very high melting point. They do not dissolve. In general they don’t conduct electricity.
What is ionic bonding?
The bonding between a metal and a non metal. This attraction is the attraction of positive and negative charges known as electrostatic attraction.
What are some features of ionic bonds?
They are very strong. All ionic compounds are solid at room temperature. They have high melting and boiling points. They do not conduct electricity as a solid but do when molten or dissolved in water.
What is metallic bonding
The bonding of two metals to form a metallic lattice structure. It is the electrostatic attraction between positive ions and a sea of delocalised electrons.
What are some features of metallic bonded compounds.
They have strong bonds and conduct electricity. They have high melting and boiling points. They are solid at room temperature.
What does it mean if a compound is saturated.
There is only single bonds between elements.
What does it mean if a compound is unsaturated.
There is at least one double or triple bond between elements.
