6.3. Group 0 Flashcards
1
Q
Inert meaning?
A
Chemically inactive (no reactions)
2
Q
What makes noble gases chemically inert?
A
Full outer shell means no reactivity
3
Q
What is the lowest dense noble gas and how is it used and why
A
Helium used in balloons and airships since it is much less dense than air, so balloons filled with it float upwards.
4
Q
What are the most inert and non-flammable noble gases and how are they used and why?
A
Argon, krypton and xenon are used inside light bulbs,
stops the filament burning away
5
Q
Why is argon used as a shield gas during welding?
A
It is denser than air which keeps it away from the metal
6
Q
What is the pattern of physical properties in noble gases when going down the group
A
As you go down the group, the boiling point, relative atomic mass and density all increases
