ionic,metallic,covalent structure and bonding

Question 1

how are ion compounds arranged

Answer 1

they are arranged in an order called an ionic lattice

Question 2

why are the melting and boiling points of an ionic compound so high

Answer 2

they are very high because they have very strong electromagnetic bonds

Question 3

when can ionic compounds conduct electricity

Answer 3

they conduct electricity if they have been melted to form a liquid or if it has been dissolved into a solution

Question 4

name three properties of metals

Answer 4

very good electrical conductors because they have delocalised electrons
they are very good at transferring heat
they have high melting and boiling points because they have very strong bonds

Question 5

why is the bonding in metal so strong

Answer 5

it is strong because the delocalised electrons are able to move the whole way round the structure

Question 6

why are covalent bonds formed

Answer 6

they are formed when two elements need each others electrons to get a full outer shell so they share

Question 7

why do small covalent molecules have low boiling points

Answer 7

there are weak forces between the bonds

Question 8

what kind of structure do giant covalent molecule have

Answer 8

it has a giant covalent structure which is an atom which has a large amount of atoms.

Question 9

why do giant covalent structures have high melting and boiling points

Answer 9

they have high melting and boiling points because there are very strong covalent bonds between each atom