Unreactive metals are found as uncombined metals in the Earth’s crust - Edexcel - GCSE Chemistry Combined Science - Question 4 - 2016 - Paper 1
Question 4
Unreactive metals are found as uncombined metals in the Earth’s crust.
(a) Which of the following metals is found uncombined in the Earth’s crust?
A aluminium
B... show full transcript
Worked Solution & Example Answer:Unreactive metals are found as uncombined metals in the Earth’s crust - Edexcel - GCSE Chemistry Combined Science - Question 4 - 2016 - Paper 1
Step 1
Which of the following metals is found uncombined in the Earth’s crust?
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Answer
B gold
Gold is known for being unreactive and is commonly found in its elemental form in nature.
Step 2
Complete the word equation for the reaction.
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Answer
iron oxide + carbon → iron + carbon dioxide
Step 3
What happens to the iron oxide during this reaction?
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Answer
D the iron oxide is reduced
In the reaction, iron oxide is reduced as it loses oxygen to form iron.
