group 0

Question 1

6 properties of noble gases

Answer 1

odourless, colourless, monatomic, very low chemical reactivity, tasteless, unflammable

Question 2

3 uses of group 8 elements

Answer 2

filling airships, neon signs, lasers

Question 3

what is an inert gas

Answer 3

a gas that doesn’t undergo chemical reactions under a set of given conditions

Question 4

why are group 8 elements inert

Answer 4

the atoms of noble gases already have complete outer shells so they have no tendency to loose (cation)gain (anion)or share (covalent) electrons so don’t take part in chemical reactions

Question 5

trend in boiling points

Answer 5

low and it increases as you go down the group

helium has the lowest boiling point ever

Question 6

trend in density

Answer 6

it increases as you go down the group as extra electron shells are added

Question 7

why do the boiling points increase as you go down

Answer 7

the atoms become larger
the forces between the atoms become stronger
more energy is needed to overcome these forces

Question 8

what products rely on group 0s unique properties

Answer 8

helium is used to fill balloons because of its very low density
argon is used instead of air in lightbulbs because it is inert and will not react with the hot metal filament