Where are the alkali metals found in the periodic table?
Group 1.
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How are alkali metals stored? Why?
Under oil. To prevent them reacting with air or water.
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What do alkali metals produce when reacted with water?
Hydrogen and hydroxide.
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Do elements at the top or bottom on Group 1 react most vigorously?
Bottom.
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How can flame tests show the presence of different compounds?
Different compounds produce different coloured flames.
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What are the steps to a flame test?
A piece of clean nichrome wire is dipped in water, the wire is dipped in the solid compound and put in to the Bunsen flame, each compound will produce a different coloured flame.
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What colour flame does litium produce?
Red.
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What colour flame does Sodium produce?
Yellow.
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What colour flame does potassium produce?
Purple.
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What colour flame does calcium produce?
Green.
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With the exception of potassium, does density increase or decrease down Group 1?
Increase.
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Do melting and boiling points increase or decrease down Group 1?
Decrease.
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Why do alkali metals have similar chemical properties?
They lose one electron from their outer shell as they react.
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Why does the reactivity increase down Group 1?
The outer shell gets further away from the positive attraction of the nucleus so it's easier for an atom to lose an electron from its outer shell.
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What is the name of the general process where electrons are lost by an atom?
Oxidation.
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Other cards in this set
Card 2
Front
How are alkali metals stored? Why?
Back
Under oil. To prevent them reacting with air or water.
Card 3
Front
What do alkali metals produce when reacted with water?
Back
Card 4
Front
Do elements at the top or bottom on Group 1 react most vigorously?
Back
Card 5
Front
How can flame tests show the presence of different compounds?
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