4 (a) Metals are extracted from ores found in the Earth’s crust - Edexcel - GCSE Chemistry - Question 4 - 2016 - Paper 1
Question 4
4 (a) Metals are extracted from ores found in the Earth’s crust. Draw a straight line from each metal to the method used to extract the metal from its ore.
metal
a... show full transcript
Worked Solution & Example Answer:4 (a) Metals are extracted from ores found in the Earth’s crust - Edexcel - GCSE Chemistry - Question 4 - 2016 - Paper 1
Step 1
Metals Extraction Methods
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Answer
Connect 'aluminium' to 'electrolysis'.
Connect 'gold' to 'separating the uncombined metal'.
Connect 'iron' to 'heating with carbon'.
Step 2
(i) Complete the word equation for this reaction.
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Answer
zinc oxide + carbon → zinc + carbon dioxide
Step 3
(ii) In this reaction zinc oxide has lost oxygen to form zinc. State the name of the change that occurs when a compound loses oxygen.
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Answer
reduction
Step 4
State two properties of copper that make it suitable for this use.
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