Structure And Bonding Flashcards
Ionic bond
The strong electrostatic attraction between oppositely charged ions
When does ionic bonding occur
Between metals and non metals
Why do ionic compounds have high melting and boiling points
The strong electrostatic attraction between oppositely charged ions require a lot of energy to overcome
When can ionic compounds conduct electricity
When molten or in solution
Why can’t ionic compounds conduct electricity when solid
The ions are fixed in position and not free to move around
Why can ionic compounds conduct electricity when molten or in solution
The ions are free to move around
Ionic compounds structure
Giant ionic lattice structure
Covalent bond
The electrostatic attraction between two positive nuclei and a shared pair of electrons
Compound
A substance formed from two or more elements, chemically combined
Simple covalent structure
Covalent molecules that contain only a few atoms
Simple covalent structure bonding
Week forces of attraction between molecules and are easy to overcome
Properties of simple molecular structures
Fixed amount, Low melting and boiling points, weak forces of attraction, brittle, can’t conduct electricity,
Why can’t simple molecular structures conduct electricity
There are no mobile electrons or ions to carry a charge
Why is diamond hard
Each carbon atom forms four bonds to other carbon atoms in a giant tetrahedral lattice structure
Why is graphite soft and slippery
There are weak forces of attraction between the layers
