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S3 Chemistry: Metals


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S3 Chemistry: Metals


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Metal + Oxygen →
[Back]


Metal Oxide

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S3 Chemistry: Metals - Details

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33 questions
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Magnesium + Oxygen →
Magnesium Oxide
Metal + Water →
Metal Hydroxide + Hydrogen
Sodium + Water →
Sodium Hydroxide + Hydrogen
Metal + Acid →
Metal Salt + Hydrogen
Zinc + Sulfuric Acid →
Zinc Sulfate + Hydrogen
Name the metals stored under oil
Potassium, Sodium, Lithium
What metals react with acid but not water
Any metals between aluminium and lead in the electrochemical series
Describe the test for hydrogen gas
Test hydrogen gas with a lighted splint and it will go pop.
What is a metal ore?
A rock containing a naturally occurring metal compound.
What oxides are extracted by heating with carbon?
Any oxides from zinc oxide to lead oxide in the electrochemical series
What metals are extracted from their oxides by electrolysis
Any from Lithium oxide to aluminium oxide in the electrochemical series.
What happens in a displacement reaction and what would you observe?
When metals higher up in the reactivity series displace those lower down from solution you see the metal changing colour in a displacement reaction.
Write a word equation for magnesium displacing zinc from zinc sulfate solution
Magnesium + Zinc Sulfate → Magnesium sulfate + Zinc
What metals could displace iron from solution?
Any metals above iron in the electrochemical series
What is corrosion
A chemical reaction in which the surface of a metal changes into a compound from an element.
Describe the test for rust
Ferroxyl indicator changes colour from yellow to blue in the presence of rust.
Why does galvanising protect iron from rusting?
It stops air and water reaching the iron. If scratched it corrodes instead of the iron and provides sacrificial protection
What is meant by sacrificial protection?
Connecting a metal above iron in the electrochemical series to slow the corrosion of iron. The higher up metal is sacrificed to protect the iron.
What metals could be used to protect iron from rusting by providing sacrificial protection?
Any metal higher than iron in the electrochemical series, usually magnesium, aluminium or zinc.
Can potassium, sodium or lithium be used for sacrificial protection?
No, as they are far too reactive and unstable in air.
What metals react with water, acid and oxygen?
Lithium, Potassium, Sodium, Magnesium
What metals react with oxygen and acid only?
Aluminium, zinc, iron, nickel, tin, lead
List the reactivity series in order
Lithium, potassium, sodium, magnesium, aluminium, zinc, iron, nickel, tin, lead, copper, silver, mercury, gold.