The Noble Gases

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What group are the noble gases in?
The noble gases are in group 8 (or group 0)
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Examples of noble gases are:
helium, argon and neon
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These gases were very hard to discover. Explain why.
They are COLOURLESS GASES at room temperature so can't be seen, they are INERT (unreactive) because they have FULL outer shells and they are also NON-FLAMMABLE.
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How were the noble gases discovered?
Scientists realised that the density of nitrogen made in chemical reactions was different to the density of nitrogen taken from air, meaning that air had other gases mixed in with it as well.
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What are some useful everyday uses of the noble gases?
Argon is used in filament lamps as it is non-flammable and stops the hot filament from burning away. Helium is used in balloons as it is less dense than air so it makes the balloons float.
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The boiling points and densities of the noble gases...
INCREASE as you go down the group.
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Card 2

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Examples of noble gases are:

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helium, argon and neon

Card 3

Front

These gases were very hard to discover. Explain why.

Back

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Card 4

Front

How were the noble gases discovered?

Back

Preview of the front of card 4

Card 5

Front

What are some useful everyday uses of the noble gases?

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