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The photograph shows a limestone quarry - Edexcel - GCSE Chemistry - Question 2 - 2013 - Paper 1
Question 2
The photograph shows a limestone quarry. Complete the sentence by putting a cross (X) in the box next to your answer. Opening a limestone quarry causes environment... show full transcript
Worked Solution & Example Answer:The photograph shows a limestone quarry - Edexcel - GCSE Chemistry - Question 2 - 2013 - Paper 1
Step 1
Complete the sentence by putting a cross (X) in the box next to your answer.
Answer
The correct option is B: increases noise.
Opening a limestone quarry typically generates significant noise due to the machinery used for excavation and processing, which can disturb surrounding communities and wildlife.
Step 2
Explain what is meant by thermal decomposition.
Answer
Thermal decomposition refers to the process in which a compound is broken down into simpler substances when heated. In the case of calcium carbonate, when it is thermally decomposed, it splits into calcium oxide and carbon dioxide gas. This reaction can be represented as:
ightarrow ext{calcium oxide} + ext{carbon dioxide}$$ This type of reaction is important in various chemical processes, particularly in the production of lime used in construction and other industries.