Definitions 0.0 / 5 ? ChemistryGCSEAll boards Created by: SineadCreated on: 30-04-13 18:25 Arrhenius' Definition of a Base A substance that dissociates in water to produce OH- ions 1 of 12 Bronsted - Lowry Acid Proton Donor 2 of 12 Bronsted - Lowry Base Proton Acceptor 3 of 12 Conjugate Base An acid which donates a proton turns into a conjugate base 4 of 12 Conjugate Acid A base when it accepts a proton changes into conjugate acid 5 of 12 Conjugate Acid - Base Pair Is any pair consisting of an acid and a base which differ by one proton (H+) 6 of 12 Rate of Reaction Defined as the change in concentration per unit time of any one reactant or product 7 of 12 Catalyst Substance that alters the rate of a chemical reaction but is not consumed in the reaction 8 of 12 Activation Energy is the minimum energy which colliding must have for a reaction to occur 9 of 12 Chemical Equilibrium Is a state of dynamic balance where the rate of reaction equals the rate of the reverse reaction 10 of 12 Hard Water Water that will not easily form a lather with soap. Hardness in water is caused by the presence of Ca2+ or Mg2+ ions 11 of 12 Biochemical Oxygen Demand Defined as: the amount of dissolved oxygen 12 of 12
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