6.3: group 0

Question 1

what does “chemically inert” mean

Answer 1

term used to describe a substance that is not chemically reactive

Question 2

what is group 0

Answer 2

noble gases

Question 3

how many electrons do noble gases have in their outer shell

Answer 3

noble gases have 8 electrons in their outer shell

Question 4

why are noble gases chemically inert

Answer 4

their full outer shells make them unreactive as they are very stable

Question 5

how is the low density of noble gases practical

Answer 5

the low density means it is much less dense than air so it is used in balloons and airships (helium)

Question 6

how is the non-flammability of noble gases useful

Answer 6

these are used inside light bulbs to stop the filament from burning away

Question 7

how is the inertness of noble gases useful

Answer 7

argon can be used as a sheild gas during welding, and as it is also denser than air, it keeps it away from the metal

Question 8

what are the physical properties of noble gases

Answer 8

The​ ​boiling​ ​points​ ​of​ ​the​ ​noble​ ​gases​ ​increase​ ​with​ ​increasing​ ​relative​ ​atomic mass​ ​(going​ ​down​ ​the​ ​group) and the​ ​densities​ ​of​ ​the​ ​noble​ ​gases​ also ​increase​ ​as​ ​you​ ​go​ ​down​ ​the​ ​group