Metals
(a) Unreactive metals are found as uncombined metals in the Earth's crust - Edexcel - GCSE Chemistry - Question 1 - 2012 - Paper 1
Question 1
Metals
(a) Unreactive metals are found as uncombined metals in the Earth's crust.
Which of the following metals is found uncombined in the Earth's?
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Worked Solution & Example Answer:Metals
(a) Unreactive metals are found as uncombined metals in the Earth's crust - Edexcel - GCSE Chemistry - Question 1 - 2012 - Paper 1
Step 1
Identify the uncombined metal
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Answer
The uncombined metal found in the Earth's crust from the options provided is A: gold. Gold is an unreactive metal that does not readily combine with other elements.
Step 2
Complete the word equation for the reaction
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Answer
iron oxide + carbon → iron + carbon dioxide
Step 3
State what is meant by reduced
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Answer
In the context of a chemical reaction, 'reduced' refers to the loss of oxygen from a compound or the gain of electrons by an element, resulting in a decrease in oxidation state.
