Rates of Reaction

Question 1

definition of rate

Answer 1

change in amount of reactants/products over time

Question 2

definition of activation energy

Answer 2

energy required for a reaction to occur

Question 3

what does rate increasing mean

Answer 3

frequency of collision increases

more particles with higher energy than a.e

Question 4

definition of endothermic

Answer 4

energy is absorbed to break bonds, energy of products have more energy than reactants

Question 5

definition of exothermic

Answer 5

energy is released by new bonds forming,energy of products have less energy than reactants

Question 6

definition of catalyst

Answer 6

increase rate of reaction
remains unchanged
provides an alternative pathway with lower activation energy

Question 7

factors affecting rate

Answer 7

concentration
temperature
catalyst

Question 8

look at boltzman ditribution and describe

Answer 8

proportion of successful collisions increase with temp - greater proportion exceed activation energy