Changes

==Key Stage 3=====Meaning===[[Iron Oxide]] is a [[solid]] (at [[Room Temperature|room temperature]]) chemical [[compound]] with the [[Chemical Formula|formula]] Fe₂(O)₃. ===About Iron Oxide===: [[Iron Oxide]] is a [[base]].: [[Iron Oxide]] [[Chemical Reaction|reacts]] with [[acid]]s to produce a [[Iron]] [[salt]] and [[water]].:: [[Hydrochloric Acid]] + [[Iron Oxide]] → [[Iron Chloride]] + [[Water]]:: [[Sulphuric Acid]] + [[Iron Oxide]] → [[Iron Sulphate]] + [[Water]]:: [[Nitric Acid]] + [[Iron Oxide]] → [[Iron Nitrate]] + [[Water]] ==Key Stage 4=====Meaning===[[Iron Oxide]] is a [[solid]] ([[STP]]) chemical [[compound]]. ===About Iron Oxide===: [[Iron Oxide]] may have the following [[Chemical Formula|formulae]]::*FeO and is known as [[Iron (II) Oxide]].:*Fe₂(O)₃ and is known as [[Iron (III) Oxide]].: [[Iron Oxide]] is a [[base]].: [[Iron Oxide]] is held together by [[Ionic Bond|ionic bonds]].: [[Iron Oxide]] has a [[Giant Ionic Structure|giant ionic structure]].: [[Iron Oxide]] [[Chemical Reaction|reacts]] with [[acid]]s to produce a [[Iron]] [[salt]] and [[water]].