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==Key Stage 3=====Meaning===[[Aluminium Oxide]] is a [[solid]] (at [[Room Temperature|room temperature]]) chemical [[compound]] with the [[Chemical Formula|formula]] Al<sub>2</sub>(O)<sub>3</sub>. ===About Aluminium Oxide===: [[Aluminium Oxide]] is a [[base]].: [[Aluminium Oxide]] [[Chemical Reaction|reacts]] with [[acid]]s to produce a [[Aluminium]] [[salt]] and [[water]].:: [[Hydrochloric Acid]] + [[Aluminium Oxide]] → [[Aluminium Chloride]] + [[Water]]:: [[Sulphuric Acid]] + [[Aluminium Oxide]] → [[Aluminium Sulphate]] + [[Water]]:: [[Nitric Acid]] + [[Aluminium Oxide]] → [[Aluminium Nitrate]] + [[Water]] ==Key Stage 4=====Meaning===[[Aluminium Oxide]] is a [[solid]] ([[STP]]) chemical [[compound]] with the [[Chemical Formula|formula]] Al<sub>2</sub>(O)<sub>3</sub>. ===About Aluminium Oxide===: [[Aluminium Oxide]] is a [[base]].: [[Aluminium Oxide]] is held together by [[Ionic Bond|ionic bonds]].: [[Aluminium Oxide]] has a [[Giant Ionic Structure|giant ionic structure]].: [[Aluminium Oxide]] [[Chemical Reaction|reacts]] with [[acid]]s to produce a [[Aluminium]] [[salt]] and [[water]].:: [[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:: [[Sulphuric Acid]] + [[Aluminium Oxide]] → [[Aluminium Sulphate]] + [[Water]]:: 3H<sub>2</sub>SO<sub>4</sub> + Al<sub>2</sub>O<sub>3</sub> → Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub> + 3H<sub>2</sub>O:: [[Nitric Acid]] + [[Aluminium Oxide]] → [[Aluminium Nitrate]] + [[Water]]:: 2HNO<sub>3</sub> + Al<sub>2</sub>O<sub>3</sub> → 2LiNO<sub>3</sub> + H<sub>2</sub>O