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==Key Stage 3=====Meaning===[[Calcium Carbonate]] is a [[solid]] (at [[Room Temperature|room temperature]]) chemical [[compound]] with the [[Chemical Formula|formula]] CaCO<sub>3</sub>. ===About Calcium Carbonate===: [[Calcium Carbonate]] is a [[base]].: [[Calcium Carbonate]] [[Chemical Reaction|reacts]] with [[acid]]s to produce a [[Calcium]] [[salt]], [[Carbon Dioxide]] and [[Water]].:: [[Hydrochloric Acid]] + [[Calcium Carbonate]] → [[Calcium Chloride]] + [[Carbon Dioxide]] + [[Water]]:: [[Sulphuric Acid]] + [[Calcium Carbonate]] → [[Calcium Sulphate]] + [[Carbon Dioxide]] + [[Water]]:: [[Nitric Acid]] + [[Calcium Carbonate]] → [[Calcium Nitrate]] + [[Carbon Dioxide]] + [[Water]] ==Key Stage 4=====Meaning===[[Calcium Carbonate]] is a [[solid]] ([[STP]]) chemical [[compound]] with the [[Chemical Formula|formula]] CaCO<sub>3</sub>. ===About Calcium Carbonate===: [[Calcium Carbonate]] is a [[base]].: [[Calcium Carbonate]] [[Chemical Reaction|reacts]] with [[acid]]s to produce a [[Calcium]] [[salt]], [[Carbon Dioxide]] and [[Water]]. :: [[Hydrochloric Acid]] + [[Calcium Carbonate]] → [[Calcium Chloride]] + [[Carbon Dioxide]] + [[Water]]:: 2HCl + CaCO<sub>3</sub> → CaCl<sub>2</sub> + CO<sub>2</sub> + H<sub>2</sub>O:: [[Sulphuric Acid]] + [[Calcium Carbonate]] → [[Calcium Sulphate]] + [[Carbon Dioxide]] + [[Water]]:: H<sub>2</sub>SO<sub>4</sub> + CaCO<sub>3</sub> → CaSO<sub>4</sub> + CO<sub>2</sub> + H<sub>2</sub>O:: [[Nitric Acid]] + [[Calcium Carbonate]] → [[Calcium Nitrate]] + [[Carbon Dioxide]] + [[Water]]:: 2HNO<sub>3</sub> + CaCO<sub>3</sub> → Ca(NO<sub>3</sub>)<sub>2</sub> + CO<sub>2</sub> + H<sub>2</sub>O ===References=======AQA==== :[https://www.amazon.co.uk/gp/product/0198359381/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359381&linkCode=as2&tag=nrjc-21&linkId=47c8d1ae58d8b3a5e2094cd447154558 ''Calcium carbonate, pages 134, 196, GCSE Chemistry; Third Edition, Oxford University Press, AQA '']