Limestone is a sedimentary rock - Edexcel - GCSE Chemistry - Question 5 - 2012 - Paper 1
Question 5
Limestone is a sedimentary rock.
(a) Explain how sedimentary rocks are formed.
(b) The photograph shows a piece of limestone.
State what can be seen in this photo... show full transcript
Worked Solution & Example Answer:Limestone is a sedimentary rock - Edexcel - GCSE Chemistry - Question 5 - 2012 - Paper 1
Step 1
Explain how sedimentary rocks are formed.
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Sedimentary rocks are formed through various processes involving layers of deposits. The formation begins when layers of sediments, such as sand, mud, and dead sea creatures, accumulate over time. These sediments undergo compaction and cementation due to the pressure exerted by overlying materials and the presence of water, resulting in the creation of solid rock.
Step 2
State what can be seen in this photograph that shows limestone is likely to be a sedimentary rock.
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The photograph likely shows the presence of fossils or imprints, which are characteristic features indicative of sedimentary rocks.
Step 3
State why limestone is spread on fields.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Limestone is spread on fields to neutralize acidic soil, increasing the pH levels and improving soil quality for better crop growth.
