Topic 5 - Rates of Reaction Flashcards
what is the rate of a chemical reaction?
how fast the reactants are changed into products
how could you find the speed of a reaction?
record the amount of product formed or the amount of reactant used up in a set time
what does a steeper line mean on a rate of reaction graph?
a quicker reaction
what does the rate of reaction depend on?
collision theory - collision frequency and energy transferred
how does collision frequency affect reaction rates?
the more collisions there are the faster the reaction is
how does energy transfer affect reaction rates?
particles have to collide with enough energy for a successful collision
what is activation energy?
the minimum amount of energy that particles need to react - to break the bonds in the reactants
what does a greater activation energy mean?
more energy is needed to start the reaction
how do you increase the rate of reaction?
increase the number of collisions or the amount of energy particles collide with
