C4 : Reactivity of Metals Flashcards
Displacement Order
A metal can only displace another metal from a compound if it is located above it in the reactivity series.
Potassium reaction
Potassium is the most reactive so reacts very quickly.
The hydrogen produced ignites instantly and the metal also sets alight, sparking and burning with a lilac flame.
Sodium reaction
Sodium fizzes rapidly and melts to form a ball that moves around on the water surface.
Lithium reaction
Lithium fizzes steadily and floats, becoming smaller until it eventually disappears.
What are the metals that react with dilute acid but not cold water
magnesium, aluminium, zinc, iron and lead
What are the metals that dont react with dilute acids
copper, silver, gold and platinum.
Why is carbon used to extract metals
Reducing a metal with carbon will result in the extraction of the metal if the metal is lower in the reactivity series than carbon.
Carbon is used because it is cheap and abundant.
How is carbon used to extract metals
In the reduction, the metal oxide loses oxygen to form a pure metal.
Reduction with carbon normally involves heating the metal oxide in the presence of the carbon, which is often used in the form of coal.
In a carbon reaction, what does a metal oxide lose to form a pure metal
In a reduction reaction with carbon, a metal oxide loses oxygen to form a pure metal.
What is produced when metals react with dilute acids
A salt, Hydrogen Gas
What form is carbon often used in when reducing metal oxides?
Coal
Why is carbon used to extract metals from their oxides?
Cheap, high abundance
