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20 Cards in this Set
- Front
- Back
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Thermal decomposition |
The breakdown of something using heat |
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Neutralisation |
When an alkali reacts with an acid in a neutralisation reaction |
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Chemical name for limestone |
Calcium carbonate |
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Chemical formula for limestone |
CaCO |
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What happens when calcium carbonate undergoes a thermal decomposition recation |
It is broken down into calcium carbonate and carbon dioxide |
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Symbol equation for thermal decomposition of limestone |
CaCO ---> CaO + CO |
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Reaction between a metal carbonate and an acid |
Acid + metal carbonates ---> salt + water + carbon dioxide |
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How can you prove carbon dioxide is produced |
Bubble it through lime water, and if the lime water goes milky, there is carbon dioxide. |
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What substance is produced in the test for carbon dioxide |
Calcium carbonate |
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Why is calcium hydroxide used to neutralise acidic lakes and soils |
Because it is an alkali
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Chemical name for quicklime |
Calcium oxide |
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Chemical formula for quicklime |
CaO |
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Chemical name for slaked lime |
Calcium hydroxide |
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Chemical formula for slaked lime |
Ca(OH) |
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How is cement made |
Limestone and clay are heated up and ground into fine powder |
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How is concrete made |
Aggregate (small stones or crushed rocks) is added to a mixture of water, cement and sand and then when this all sets it forms concrete. |
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Use of mortar |
Holding bricks together |
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How does mortar work |
The lime in the mortar reacts with the CO in the air, producing calcium carbonate |
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Advantages of quarrying limestone |
Creates jobs, boosts local economy |
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Disadvantages of quarrying limestone |
Could destroy animal habitats, quarry lorries could cause congestion |
