kinetics definitions 0.0 / 5 ? ChemistrykineticsA2/A-levelAQA Created by: bambiCreated on: 05-09-13 19:38 10852734169 Across 1. The constant of proportionality in the rate equation, it is given the symbol k , that links the rate of reaction with the concentration of the reactantsraised to the powers of their orders in the rate equation . It increases with rising temperature (4, 8) 4. The time taken for the concentration of a reactant to reduce by half and is independent of concentration for a first order reactant (4, 4) 5. A reaction is _____ with respect to a particular species if the rate of reaction is proportional to the concentration of that species sqaured (6, 5) 9. A technique that measures the concentration of a colored solution by measuring the specific wavelength of light absorbed by the solution (11) 10. The minimum amount of energy particles need to have if a collision between them is to result in the breaking of bonds (10, 6) Down 2. The series of steps in a chemical reaction that make up an overall reaction (8, 9) 3. Chemical ______or reaction______is the study of rates of reactions and factors affecting rates (8) 6. A substance that speeds up a chemical reaction but remains chemically unchanged at the end of the reaction. It works by finding an alternate route by which the reaction can take place therefore lowering the activation energy (8) 7. The rate at which reactants are consumed or products are formed in a reaction with units mol dm^3 s^-1 (4, 2, 8) 8. The power to which a concentration is raised in the rate equation. Used on its own , the phase usually relates to the overall order of a reaction (5)
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