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In the extraction of tin from tin oxide, tin oxide is heated with carbon - Edexcel - GCSE Chemistry - Question 6 - 2014 - Paper 1
Question 6
In the extraction of tin from tin oxide, tin oxide is heated with carbon. $$ ext{SnO}_2 + ext{C} ightarrow ext{Sn} + ext{CO}_2$$ Complete the sentence by putti... show full transcript
Worked Solution & Example Answer:In the extraction of tin from tin oxide, tin oxide is heated with carbon - Edexcel - GCSE Chemistry - Question 6 - 2014 - Paper 1
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In terms of the arrangement of metal atoms, explain why gold alloys are stronger than pure gold.
Answer
Gold alloys are stronger than pure gold primarily due to the presence of different metal atoms (like copper and silver) that disrupt the uniform arrangement of gold atoms.
This disruption creates obstacles to the movement of dislocations within the metal structure. As a result, the mechanical properties such as strength and hardness are enhanced while maintaining a degree of malleability. This variation in atomic size and arrangement leads to a more robust structure compared to pure gold.