ionic compounds

Question 1

what is the structure of an ionic compound

Answer 1

giant ionic lattice

Question 2

what do the ions form

Answer 2

a closely packed regular lattice arrangement and there are very strong electrostatic forces of attraction between oppositely charged ions.

Question 3

what are the properties of ionic compounds

Answer 3

high melting and boiling points due to the many strong bonds between the ions.

Question 4

what happens when they are solid

Answer 4

the ions are held in place, so the compounds cannot conduct electricity.

Question 5

what happens when ionic compounds melt

Answer 5

the ions are free to move and they’ll carry electric current

Question 6

what happens when ionic compounds dissolve in water

Answer 6

ions separate and are all free to move in the solution. carrying electric current.

Question 7

how do you work out the empirical formula

Answer 7

1) look at the diagram and work out what ions are in the compound
2) work out what charges the ions will form
3) Balance the charges so the charge of the empirical formula is 0