Flashcards in C2.4 Rates and Energy Deck (11):
What methods can be used to measure the rate of a reaction?
Measuring the decreasing mass, measuring the volume of gas given off, measuring the decreasing light passing through a solution
rate of reaction=
amount of reactant used or amount of product formed/time
What are the factors affecting the rate of a chemical reaction?
temperature, surface area, concentration/pressure and presence of a catalyst
what is the collision theory?
an explanation of chemical reactions in terms of reacting particles colliding with sufficient energy for a reaction to take place
What is the activation energy?
the smallest amount of energy that particles must have before they can react
What can you increase to increase the chance of particles reacting?
the chance of the reacting particles to collide, increase the energy that they have when they collide
Why does raising the temperature increase the rate of reaction?
particles collide more often and particles collide with more energy
Advantages to using catalysts
save the environment and money
Examples of endothermic reaction
Examples of exothermic reaction