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The list shows some metals in reactivity series order with the most reactive at the top - Edexcel - GCSE Chemistry - Question 1 - 2012 - Paper 1
Question 1
The list shows some metals in reactivity series order with the most reactive at the top. most reactive calcium magnesium aluminium zinc iron copper gold least react... show full transcript
Worked Solution & Example Answer:The list shows some metals in reactivity series order with the most reactive at the top - Edexcel - GCSE Chemistry - Question 1 - 2012 - Paper 1
Step 1
Which of these metals can be found as the uncombined metal in the Earth’s crust?
Answer
The uncombined metals in the Earth's crust include those that are least reactive. In this case, the metal gold (B) can be found in its natural state because it does not readily react with other elements.
Step 2
State the meaning of the term reduction.
Answer
Reduction refers to the chemical process where a substance gains electrons or decreases its oxidation state, often associated with the removal of oxygen or the addition of hydrogen. In the context of metal extraction, it involves converting metal oxides back into pure metal.