Extracting metals using carbon (Edexcel GCSE Chemistry Combined Science): Quizzes

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Extracting metals using carbon
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12 questions from this quiz

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What is a metal ore?

A rock with enough metal for extraction

In what form do most ores contain the metal?

As an oxide

How are unreactive metals like gold and platinum found in nature?

As uncombined elements

What treatment may unreactive metals like gold need before use?

Refining

Why is carbon used for metal extraction?

It is cheap and widely available

What dual role does carbon play in metal extraction?

Reducing agent and fuel

Which metals can be extracted from their ores using carbon?

Metals less reactive than carbon

What are the products when a metal oxide is reduced with carbon?

Metal and CO2CO_2 (or COCO)

Where is iron extracted from iron(III) oxide (Fe2O3Fe_2O_3)?

In a blast furnace

Which of these metals cannot be extracted using carbon?

Aluminium

What method is used to extract metals more reactive than carbon?

Electrolysis

How does electrolysis compare to carbon reduction in terms of cost?

Electrolysis is more expensive

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