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1. Unreactive metals are found as uncombined metals in the Earth’s crust - Edexcel - GCSE Chemistry - Question 1 - 2012 - Paper 1

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1. Unreactive metals are found as uncombined metals in the Earth’s crust. Which of the following metals is found uncombined in the Earth’s? Put a cross (X) in the bo... show full transcript

Worked Solution & Example Answer:1. Unreactive metals are found as uncombined metals in the Earth’s crust - Edexcel - GCSE Chemistry - Question 1 - 2012 - Paper 1

Step 1

a) Which of the following metals is found uncombined in the Earth’s crust?

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Answer

The correct answer is A: gold. Gold is known for its lack of reactivity and is often found in its native form.

Step 2

b)(i) Complete the word equation for the reaction.

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Answer

The completed word equation is:

iron oxide + carbon → carbon dioxide + iron.

Step 3

b)(ii) State what is meant by reduced.

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Answer

In this context, 'reduced' refers to the process of losing oxygen or gaining electrons. Specifically, it means the metal oxide is converted to a metal by the removal of oxygen.

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