Rates of Reactions Flashcards
Why does increasing the temperature increase the rate of reaction?
The energy is increased so the particles move faster which means they are going to have more successful collisions per second.
Why does increasing the concentration increase rate of reaction?
There are more particles of the reactant in the same volume making more successful collisions more likely.
Why does increasing the pressure increase rate of reaction?
The particles will be more crowded. This means that there are more successful collisions per second.
Why does increasing the surface area increase rate of reaction?
The particles will have more area to work on, meaning there will be more successful collisions per second.
Why does adding a catalyst increase rate of reaction?
A catalyst provides an alternate pathway with an lower activation energy meaning more particles have the minimum amount of energy for a successful collision to happen.
What is a catalyst?
A substance which increases the rate of a reaction without being chemically changed or used up in the reaction. It provides an alternative pathway with a lower activation energy
