THE NOBLE GASES. Aims To state that these gases are found in the air To name the noble gases and locate them in the periodic table To list some of their.

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Presentation transcript:

THE NOBLE GASES

Aims To state that these gases are found in the air To name the noble gases and locate them in the periodic table To list some of their properties To relate their properties to their uses

What are the names of the noble Gases? He Ne Ar Kr Xe Ra

Where are these gases found in the periodic table? Group 0

Where are they found?

What are their properties? Colourless Odourless Least reactive elements known

William Ramsey Nobel Prize winner for discovering the noble gases

Why were they difficult to discover?

What are they used for? They are used for situations where they are useful because of their lack of activity They don’t even join together to form molecules they exist as single atoms

Examples of their uses Helium used in airships and party balloons

Helium balloons Why do they float? Helium is twice as dense as hydrogen so why is it used to fill air ships?

Neon When electricity is passed through Neon it gives out a bright light

Filament lamps contain argon not air Why?

Aircraft tyres filled with argon.Why is this a good safety feature?

Xenon- produces a very bright light

QUIZ How many noble gases are there? Why are they so useful? Give one use Why were they difficult to discover? Where are they found on Earth?