IGCSE CHEMISTRY 0.0 / 5 ? ChemistryDefinitionsIGCSEAQA Created by: Sophie.P.HutchinsonCreated on: 18-07-14 18:55 Acid substance that produces H(positive) ions (a proton donor) 1 of 5 Activation Energy minimum energy required for a reaction to occur 2 of 5 Addition Polymer large molecule formed by joining or many small unsaturated molecules together 3 of 5 Alkali substance that produces OH(negative) ions (proton acceptor) 4 of 5 Alkanes saturated hydrocarbons 5 of 5
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