2. ionic bonding

Question 1

definition

ionic bond

Answer 1

an ionic bond is an electrostatic attraction between 2 oppositely charged ions

Question 2

is electrostatic attraction weak or strong?

Answer 2

very strong

Question 3

ions are formed when

Answer 3

electrons are transferred from one atom to another so as to have full outer shells

Question 4

e.g. of giant ionic lattice

Answer 4

Sodium Chloride NaCl

Question 5

why is giant ionic lattice called giant

Answer 5

‘giant’ = made up of same basic unit repeated over and over

Question 6

why does a giant ionic lattice form

Answer 6

each ion is electrostatically attracted in all directions to ions of the opposite charge

Question 7

why can ionic compounds conduct electricity when theyre molten or dissolve but not when they are solid

Answer 7

ions in liquid are mobile and can carry charge.

in a solid fixed in position by strong ionic bonds.

Question 8

why do ionic compounds have high mpt and bpt (require lots of energy to melt/boil)

Answer 8

giant ionic lattice held together by strong electrostatic forces
takes lots of energy to overcome these forces

Question 9

why do ionic compounds tend to dissolve in water

Answer 9

water molecules are polar

water molecules attracted to charged ions and pull ions away from lattice causing it to disolve

Question 10

ionic bonds form between

Answer 10

metal and non metal