| What are the main factors that affect the rate of reaction | 1) concentration
2) catalyst
3) temperature
4)surface area
5) Pressure |
| Concentration on the rate of reaction | Increasing concentration increases the frequency of collisions which in terms increases the rate of reaction |
| Pressure on rate of reaction | increased pressure = increased frequency of collisions = increased rate of reaction |
| Temperature on rate of reaction | Increased temp = increased frequency of collision |
| What does increasing the temperature do to the reactants | Increases the energy of reactant particles which means that more particles will have more energy than the activation energy needed + more successful collisions |
| Surface area on the rate of reaction | Increased SF = Increased FOC = increased ROR |
| How is increased surface area achieved | Solids broken up into smaller lumps e.g. powders
which increases surface area to volume ratio |
| Catalyst on rate of reaction | Catalyst increase rate of reaction without being used up they lower the activation energy |
| Name 3 different catalyst and their uses | Platinum - converters in cars
Enzymes - biological catalyst
Iron - ammonia |
| What are some disadvantages to catalyst | 1) Toxicity - can escape into the environment and contaminate ecosystems |
| What are some advantages to catalyst | 1) Cost effective
2) Reduce burning of fossil fuels |
