Limestone occurs naturally as calcium carbonate - Edexcel - GCSE Chemistry - Question 6 - 2014 - Paper 1
Question 6
Limestone occurs naturally as calcium carbonate.
When calcium carbonate, CaCO₃, is heated strongly, calcium oxide and carbon dioxide, CO₂, are formed.
(i) State the... show full transcript
Worked Solution & Example Answer:Limestone occurs naturally as calcium carbonate - Edexcel - GCSE Chemistry - Question 6 - 2014 - Paper 1
Step 1
State the formula of calcium oxide.
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Answer
The formula of calcium oxide is CaO.
Step 2
What type of reaction is this?
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Answer
The type of reaction is D thermal decomposition.
Step 3
Write the word equation for this reaction.
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Answer
Sedimentary rocks are formed through a process that includes erosion, sedimentation, and lithification.
Erosion: The weathering and breakdown of rocks into smaller particles, which are then transported by wind, water, or ice.
Sedimentation: Accumulation of these particles in layers, often in bodies of water such as lakes and oceans, where they can pile up over time.
Lithification: The process through which sediment becomes solid rock due to compaction and cementation, where minerals precipitate from solution and bind the particles together.
