Oxidation, reduction and the extraction of metals (AQA GCSE Chemistry): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What happens to a substance during oxidation?
What happens to a substance during oxidation?
It gains oxygen atoms
What happens to a substance during reduction?
What happens to a substance during reduction?
It loses oxygen atoms
What forms when metals react with oxygen?
What forms when metals react with oxygen?
Metal oxides
Which metals react very quickly when left in air?
Which metals react very quickly when left in air?
Alkali metals
What is the equation for magnesium reacting with oxygen?
What is the equation for magnesium reacting with oxygen?
How are most metals found in the Earth?
How are most metals found in the Earth?
As metal oxides or compounds
What process is used to extract very reactive metals like aluminium?
What process is used to extract very reactive metals like aluminium?
Electrolysis
Which metals can be extracted by heating their oxides with carbon?
Which metals can be extracted by heating their oxides with carbon?
Zinc and iron
Why are unreactive metals like gold easiest to obtain?
Why are unreactive metals like gold easiest to obtain?
Often found as pure metal in ground
Why must potassium be stored in oil?
Why must potassium be stored in oil?
Reacts immediately with oxygen in air
What happens in the reaction ?
What happens in the reaction ?
Iron oxide is reduced to iron
How does metal reactivity relate to extraction difficulty?
How does metal reactivity relate to extraction difficulty?
More reactive = harder to extract