chemical reactions 0.0 / 5 ? ScienceChemical reactionsGCSENone Created by: fayeCreated on: 30-05-13 18:37 OBSERVATION of a chemical reaction occurring? change in: pH, colour, temperature, fizzing, precipitation, (sound), light 1 of 16 What happens during a chemical reaction? bonds break-atoms rearrange-new bonds form 2 of 16 Addition reaction? chemicals join together 3 of 16 Complete and incomplete combustion? fuels burning with excess/limited oxygen 4 of 16 Oxidation? Oxygen being added to another chemical. Hydrogen being removed 5 of 16 Reduction? Oxygen being removed from another chemical. Hydrogen being added 6 of 16 Redox? Oxidation and reduction happening at the same time 7 of 16 Displacement? More reactive metal takes the place of a less reactive metal 8 of 16 Neutralisation? acid and alkali react to make a neutral solution 9 of 16 Thermal decomposition? Heat breaks a compound down 10 of 16 Photo decomposition? Light breaks a compound down 11 of 16 Precipitation? Two solutions make a solid 12 of 16 Polymerisation? Many small molecules join together to make a large molecule 13 of 16 Endothermic? Heat taken in 14 of 16 Exothermic? Heat given out 15 of 16 Reversible? reactants make the products and the products make the reactants 16 of 16
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