(2) bonding, structure and properties of matter

Question 1

which groups are most likely to form ions

Answer 1

groups 1+2 and 6+7

Question 2

metals form ________ ions

Answer 2

positive

Question 3

ionic compounds have a structure called a __________________

Answer 3

giant ionic lattice

Question 4

why do ionic compounds have high melting and boiling points

Answer 4

they have many strong forces of electrostatic attraction between the oppositely charged ions. therefore it takes a lot of energy to overcome this attraction

Question 5

what is the formula for buckminsterfullerene

Answer 5

C

60

Question 6

what are 3 uses of fullerenes

Answer 6

drug delivery into the body, catalysts, lubricants

Question 7

how does graphite conduct electricity

Answer 7

each carbon atom only forms 3 covalent bonds and are arranged in layers of hexagons
the layers are held together by weak intermolecular forces of attraction
the 4th carbon atom is not bonded and is delocalised
it is then free to carry charge throughout the structure