C2, Chemistry, Rates of reaction 0.0 / 5 ? ChemistryRate of reactionGCSEAQA Created by: emmajane_Created on: 16-03-14 15:23 Name two ways rates of reaction can be measured 1. The rate at which a reactant is used up 2. The rate at which products are formed 1 of 11 Name 5 factors that can affect the rate of reaction temperatyre, concentration, pressure of reacting gasses, surface area of reacting solids and the use of catalyst 2 of 11 Name 5 ways to speed up the rate of reaction Increase preddure of reacting gas, break solid reactants down in to smaller pieces, use a catalyst, increase temperature and increase concentration 3 of 11 COLLISIONS AND REACTIONS- How does increasing the concentration or pressure increase the rate of reaction? Name 2 ways More reactant particles in the same volume, greater chance of particles colliding 4 of 11 COLLISIONS AND REACTIONS- How does increasing the particle size increase the rate of reaction? Name 3 ways SUrface area is increased, more particles exposed to other reactants, greater change of particle colliding 5 of 11 COLLISIONS AND REACTIONS- What is activation energy? The minimum energy needed for particles to react 6 of 11 COLLISIONS AND REACTIONS- How does increasing the temperature increase the rate of reaction? Name 2 ways More particles have activation energy and reactant particles move more quickly 7 of 11 Why are catalysts important in industry? To reduce costs 8 of 11 What do catalysts do to the rate of reaction and how do they do it? Increase rates of reaction without being used up , do this by lowering activation energy 9 of 11 What is the purpose of a catalyst? To increase the rate of reaction- It causes more collisions 10 of 11 COLLISIONS AND REACTIONS- What needs to happen for a reaction to occur? Reactants need to collide 11 of 11
Comments
No comments have yet been made