rates 0.0 / 5 ? ScienceChemical reactionsGCSENone Created by: fayeCreated on: 26-05-13 20:59 How is the rate of a reaction measured? the time taken for the reactants to be used up or products to be made 1 of 13 What happens during a chemical reaction? reactants react to form products 2 of 13 what are broken in the reactants and made in the product? bonds 3 of 13 what do particles need to do in order to react? collide 4 of 13 What is it called when particles need to collide with enough energy? activation energy 5 of 13 how do you increase the rate of reaction? increasing the surface area, concentration, the amount of pressure in gasses, temperature, catalyst 6 of 13 what does increasing the surface area do? increases the frequency of collisions because there are more particles available to react 7 of 13 Concentration? more particles in the same volume 8 of 13 pressure? the particles are in a smaller volume 9 of 13 temperature? the particles are moving faster 10 of 13 why does increasing temperature increase number of successful collisions? more particles have more energy than the activation energy 11 of 13 adding a catalyst? increases the rate of reaction without being used up in the reaction 12 of 13 how does a catalyst work? increases the rate of reaction by finding an alternative pathway that has lower activation energy 13 of 13
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