Chemistry 3.3 - The Alkali Metals

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What trend occurs in Alkali Metals as you go down the group?
They become less reactive and have lower melting and boiling points.
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What property do Alkali Metals have?
They are low-density (1st 3 less dense than water)
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Name all of the Alkali Metals
Lithium, Sodium, Potassium, Rubidium and Caesium
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How many electrons do Alki Metals have in their outer shell?
One (which makes them reactive with similar properties)
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Why do the Alkali Metals become more reactive as you go down the group?
Because the outer electron is more easily lost because it further from the nucleus (there is less attraction)
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What sort of compounds do Alkali Metals form?
Ionic Compounds
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With what type of elements do Alkali Metals make Ionic Compounds with?
Non-Metals
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Why do Alkali Metals want to lose their outer electron?
In order to form a positive ion
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What type of bonding do Alkali Metals always undergo to form compounds?
Ionic (Because they react with non-metals)
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What do Alkali Metals react with to produce a gas? What is the name of the gas?
Water to produce Hydrogen gas
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Which Alkali Metals react water to react and float vigorously by moving and fizzing on it's surface?
Lithium, Sodium and Potassium
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Which Alkali Metal becomes hot enough to ignite the Hydrogen gas?
Potassium
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How can you detect hydrogen using a burning splint?
There with be a 'squeaky-pop' as the hydrogen ignites
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What do Alkali Metals form in water?
They form hydroxides (e.g Potassium hydroxide) that give alkaline solutions
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What colour does the universal indicator in an alkali metal hydroxide solution turn?
Purple
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Other cards in this set

Card 2

Front

What property do Alkali Metals have?

Back

They are low-density (1st 3 less dense than water)

Card 3

Front

Name all of the Alkali Metals

Back

Preview of the front of card 3

Card 4

Front

How many electrons do Alki Metals have in their outer shell?

Back

Preview of the front of card 4

Card 5

Front

Why do the Alkali Metals become more reactive as you go down the group?

Back

Preview of the front of card 5
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