An ==Key Stage 3=====Meaning===[[Hydrochloric Acid]] is an [[acid]] with the [[Chemical Formula|chemical formula]] HCl. ===About Hydrochloric Acid===: [[Hydrochloric Acid]] is found in the [[stomach]] made of one [[hydrogenhuman]]s.: [[Hydrochloric Acid]] with a [[concentration]] between 2[[Molarity|M]] and one 6.5[[chlorineMolarity|M]] is an [[atomirritant]].: [[Hydrochloric Acid]] with a [[concentration]] above 6.5[[Molarity|M]] is [[corrosive]].: [[Hydrochloric Acid]] [[Chemical Reaction|reacts]] with [[metal]]s and [[base]]s to produce [[Chloride]] [[salt]]s.====Hydrochloric Acid and Metals====:[[Hydrochloric Acid]] + [[Sodium]] → [[Sodium Chloride]] + [[Hydrogen]]:[[Hydrochloric Acid]] + [[Magnesium]] → [[Magnesium Chloride]] + [[Hydrogen]]:[[Hydrochloric Acid]] + [[Aluminium]] → [[Aluminium Chloride]] + [[Hydrogen]] ====Hydrochloric Acid and Metal Oxides====:[[Hydrochloric Acid]] + [[Sodium Oxide]] → [[Sodium Chloride]] + [[Water]]:[[Hydrochloric Acid]] + [[Magnesium Oxide]] → [[Magnesium Chloride]] + [[Water]]:[[Hydrochloric Acid]] + [[Aluminium Oxide]] → [[Aluminium Chloride]] + [[Water]] ====Hydrochloric Acid and Metal Hydroxides====:[[Hydrochloric Acid]] + [[Sodium Hydroxide]] → [[Sodium Chloride]] + [[Water]]:[[Hydrochloric Acid]] + [[Magnesium Hydroxide]] → [[Magnesium Chloride]] + [[Water]]:[[Hydrochloric Acid]] + [[Aluminium Hydroxide]] → [[Aluminium Chloride]] + [[Water]] ====Hydrochloric Acid and Metal Carbonates====:[[Hydrochloric Acid]] + [[Sodium Carbonate]] → [[Sodium Chloride]] + [[Carbon Dioxide]] + [[Water]]:[[Hydrochloric Acid]] + [[Magnesium Carbonate]] → [[Magnesium Chloride]] + [[Carbon Dioxide]] + [[Water]]:[[Hydrochloric Acid]] + [[Aluminium Carbonate]] → [[Aluminium Chloride]] + [[Carbon Dioxide]] + [[Water]] ==Key Stage 4=====Meaning===[[Hydrochloric Acid]] is an [[acid]] with the [[Chemical Formula|chemical formula]] HCl. ===About Hydrochloric Acid===: [[Hydrochloric Acid]] [[Chemical Reaction|reacts]] with [[metal]]s and [[base]]s to produce [[Chloride]] [[salt]]s.====Hydrochloric Acid and Metals====:[[Hydrochloric Acid]] + [[Sodium]] → [[Sodium Chloride]] + [[Hydrogen]]:2HCl + 2Na → 2NaCl + H<sub>2</sub>:[[Hydrochloric Acid]] + [[Magnesium]] → [[Magnesium Chloride]] + [[Hydrogen]]:2HCl + Mg → MgCl<sub>2</sub> + H<sub>2</sub>:[[Hydrochloric Acid]] + [[Aluminium]] → [[Aluminium Chloride]] + [[Hydrogen]]:6HCl + 2Al → 2AlCl<sub>3</sub> + 3H<sub>2</sub>====Hydrochloric Acid and Metal Oxides====:[[Hydrochloric Acid]] + [[Sodium Oxide]] → [[Sodium Chloride]] + [[Water]]:2HCl + Na<sub>2</sub>O → 2NaCl + H<sub>2</sub>O:[[Hydrochloric Acid]] + [[Magnesium Oxide]] → [[Magnesium Chloride]] + [[Water]]:2HCl + MgO → MgCl<sub>2</sub> + H<sub>2</sub>O:[[Hydrochloric Acid]] + [[Aluminium Oxide]] → [[Aluminium Chloride]] + [[Water]]:6HCl + Al<sub>2</sub>O<sub>3</sub> → 2AlCl<sub>3</sub> + 3H<sub>2</sub>O ====Hydrochloric Acid and Metal Hydroxides====:[[Hydrochloric Acid]] + [[Sodium Hydroxide]] → [[Sodium Chloride]] + [[Water]]:HCl + Na<sub>2</sub>OH → NaCl + H<sub>2</sub>O:[[Hydrochloric Acid]] + [[Magnesium Hydroxide]] → [[Magnesium Chloride]] + [[Water]]:2HCl + Mg(OH)<sub>2</sub> → MgCl<sub>2</sub> + 2H<sub>2</sub>O:[[Hydrochloric Acid]] + [[Aluminium Hydroxide]] → [[Aluminium Chloride]] + [[Water]]:3HCl + Al(OH)<sub>3</sub> → AlCl<sub>3</sub> + 3H<sub>2</sub>O ====Hydrochloric Acid and Metal Carbonates====:[[Hydrochloric Acid]] + [[Sodium Carbonate]] → [[Sodium Chloride]] + [[Carbon Dioxide]] + [[Water]]:2HCl + Na<sub>2</sub>CO<sub>3</sub> → 2NaCl + CO<sub>2</sub> + H<sub>2</sub>O:[[Hydrochloric Acid]] + [[Magnesium Carbonate]] → [[Magnesium Chloride]] + [[Carbon Dioxide]] + [[Water]]:2HCl + MgCO<sub>3</sub> → MgCl<sub>2</sub> + CO<sub>2</sub> + H<sub>2</sub>O:[[Hydrochloric Acid]] + [[Aluminium Carbonate]] → [[Aluminium Chloride]] + [[Carbon Dioxide]] + [[Water]]:6HCl + Al<sub>2</sub>(CO<sub>3</sub>)<sub>3</sub> → 2AlCl<sub>3</sub> + 3CO<sub>2</sub> + 3H<sub>2</sub>O ===References=======AQA==== :[https://www.amazon.co.uk/gp/product/0198359373/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359373&linkCode=as2&tag=nrjc-21&linkId=952a73bbb09d222ecc4b50d200679849 ''Hydrochloric acid, pages 46,48, GCSE Biology; Third Edition, Oxford University Press, AQA ''] ====Edexcel==== :[https://www.amazon.co.uk/gp/product/1292120207/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120207&linkCode=as2&tag=nrjc-21&linkId=22455ff53961978667722edaa64c0be5 ''Hydrochloric acid, page 113, GCSE Biology, Pearson, Edexcel '']:[https://www.amazon.co.uk/gp/product/1292120193/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120193&linkCode=as2&tag=nrjc-21&linkId=572df39392fb4200db8391d98ae6314e ''Hydrochloric acid, page 79, GCSE Combined Science, Pearson Edexcel '']