The reactivity series
Which metal is the most reactive: potassium, calcium, or iron?
Potassium
What ore is used as a source of iron in the blast furnace?
Haematite
What is the chemical symbol for iron?
Fe
What is the name of the ore that contains aluminium?
Bauxite
What metal is commonly used in electrical wiring?
Copper
What simple test can be used to compare the reactivity of metals with acid?
Observe the rate of hydrogen gas production (bubbling).
What gas is used to reduce iron oxide in the blast furnace?
Carbon monoxide
What is the capital of France?
Paris
What process is used to extract aluminium from its ore?
Electrolysis
Why is aluminium used for making aircraft bodies?
It is lightweight and resistant to corrosion.
Why is gold found as a native metal and not in compounds?
Because it is very unreactive.
What is the main impurity removed in the blast furnace, and what compound is used to remove it?
Sand (silicon dioxide); removed using limestone (calcium carbonate)
What metal is used in thermometers and is liquid at room temperature?
Mercury
Why is cryolite used in the extraction of aluminium?
To lower the melting point of aluminium oxide.
What metal is used to galvanise steel to prevent rusting?
Zinc
Place these metals in order of reactivity (most to least): zinc, copper, magnesium.
Magnesium > Zinc > Copper
Write the balanced chemical equation for the reduction of iron(III) oxide by carbon monoxide.
Fe₂O₃ + 3CO → 2Fe + 3CO₂
in what year, cityand country is Mr. Joe born
1998, Milan, italy
Why is aluminium more expensive to extract than iron?
It requires a large amount of electricity for electrolysis.
What property makes stainless steel useful in cutlery and surgical instruments?
It is resistant to corrosion.
Describe the displacement reaction between magnesium and copper(II) sulfate.
Magnesium displaces copper because it is more reactive, forming magnesium sulfate and copper.
Explain how slag is formed in the blast furnace.
Limestone decomposes to calcium oxide, which reacts with silicon dioxide to form calcium silicate (slag).
In the Marvel movies, Iron Man wears a high-tech suit made mostly of a fictional metal. But in the real world, which actual lightweight metal used in aircraft could be the closest practical choice for his suit?
Aluminium
Write the half-equation for the reaction at the cathode during aluminium extraction.
Al³⁺ + 3e⁻ → Al
what is the most reactive metal known? how much does1 gram cost
Francium... 1 billion dollars per gram!