Reduction - The loss of oxygen and gain of electrons, Carbon - The element used to extract iron from its ore, Displacement - The name for a reaction when a more reactive element replaces a less reactive element, Acids - These are a source of H+ ions, Bases - These are the chemical opposites to acids, Alkalis - These are soluble bases, Hydrogen - The gas produced when a metal reacts with an acid, Carbon dioxide - The gas produced when a metal carbonate reacts with acid, Magnesium sulphate - The salt formed from magnesium oxide and sulphuric acid, Neutralisation - The type of reaction between an acid and base,

Chemical changes

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