Chapter 2 Core Chem Aqa 0.0 / 5 ? ChemistryRocks, ores, metals and alloysGCSEAQA Created by: taylagreen16Created on: 06-04-16 20:50 What is limestone used to make Calcium oxide and cement 1 of 18 How do we make concrete Mixing cement with sand, aggregate and water 2 of 18 What is the chemical name for limestone Calcium carbonate 3 of 18 What happens when calcium carbonate is heated strongly? Decomposes to make calcium oxide and carbon dioxide 4 of 18 What is the type of reaction called? Thermal decomposition 5 of 18 What does thermal decomposition mean? Breaking down by heating 6 of 18 What happens to metal carbonate when it's heated strongly enough Metal oxide and carbon dioxide 7 of 18 Why can't a Bunsen flame decompose sodium/potassium carbonate It can't get hot enough 8 of 18 Why is limestone damaged by acid rain Calcium carbonate in limestone reacts with acids in rain 9 of 18 What is limewater used to test If carbon dioxide is present 10 of 18 What product is produced when water is added to calcium oxide Calcium hydroxide 11 of 18 Calcium hydroxide is an acid or an alkali? Alkali 12 of 18 Why is Calcium hydroxide used by farmers To neutralise acidic soils 13 of 18 How do you make cement Limestone Is mixed with clay and heated strongly in kiln 14 of 18 What does cement + sand + water make Mortar 15 of 18 How is concrete made Adding aggregate to cement sand and water 16 of 18 3 advantages of quarrying limestone Improved roads, new jobs for locals, more customers and trade for local businesses 17 of 18 3 disadvantages of quarrying limestone Loss of habitats for wildlife, more traffic, dust and noise 18 of 18
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