C17 GROUP 0 - NOBLE GASES Flashcards
Give 4 properties of noble gases
- low melting and boiling points
- low densities
- colourless gases
- poor heat/ electricity conductors
What happens to the melting points as you go down the group?
melting points decreases
What happens to the boiling points as you go down the group?
boiling points decreases
What happens to the density as you go down the group?
density increases
True or false: noble gases are inert
true - they do not react with anything easily
what does inert mean?
they do not react easily with anything
Why are noble gases inert?
they have a full outer shell of electrons meaning they are unreactive
How does noble gases not having a full outer shell affect their reactivity?
it is difficult for them to gain, lose or share electrons so they do not from ionic or covalent bonds
Define monatomic.
exist as an individual atom
Give two uses of helium
- party balloons
- airships
Why is helium used in airships?
- has a low density
- non-flammable
Explain why argon is used for filling some lightbulbs
- it is inert so does not react with the metal filament
