Group 0 - The Noble Gases

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  • Created by: joshd
  • Created on: 01-04-14 20:09
What are Group 0 elements called? Give examples.
Noble gases and include the elements helium, neon and argon.
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Describe Group 0 gases at room temperature.
All elements in Group 0 are colourless gases at room temperature.
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What are they also?
More or less inert - this means they don't react with much at all. The reason for this is that they have a full outer shell. This means they're not desperate to give up or gain electrons.
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What does it mean then for the noble gases?
As they are inert, it means they're non-flammable - they won't set on fire.
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What do the properties of noble gases mean?
That the gases are hard to observe - it took a long time for them to be discovered.
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How were the gases found?
When chemists noticed that the density of nitrogen made in chemical reactions was different to the density of nitrogen taken from the air.
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What did chemists hypothesise about nitrogen?
That nitrogen obtained from the air must have other gases mixed in with it.
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What did scientists gradually discover?
The different noble gases through a series of experiments, including the fractional distillation of air.
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What is argon used to provide?
An inert atmosphere in filament lamps(light bulbsAs the argon is non-flammable, it stops the very hot filament from burning away. It can also be used to protect metals that are being weldedThe inert atmosphere stops the hot metal reacting with oxygen
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What is helium used in?
Airships and party balloons. Helium has a lower density than air - so it makes balloons float.
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What happens to the boiling points and the densities of noble gases as you move down what?
Increase as you move down the group. (LEARN THE PATTERN, on table, Page 62)
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Other cards in this set

Card 2

Front

Describe Group 0 gases at room temperature.

Back

All elements in Group 0 are colourless gases at room temperature.

Card 3

Front

What are they also?

Back

Preview of the front of card 3

Card 4

Front

What does it mean then for the noble gases?

Back

Preview of the front of card 4

Card 5

Front

What do the properties of noble gases mean?

Back

Preview of the front of card 5
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