Chemistry - C5 - OCR Gateway - Foundation Tier - Mindmap
- Created by: lala2127
- Created on: 12-06-18 19:42
View mindmap
- Chemistry - C5
- Reaction Rates
- Rate of reaction = amount of reactant used or amount of product formed / time
- Praticals
- Precipitation
- Putting solution over a cross on the paper and waiting for it to go cloudy
- Use any 2 see through liquids
- Change in mass
- Measure the mass whilst the reaction is happening
- The faster the mass drops the faster the reaction
- Plot a graph
- Volume of gas given off
- Use a gas syringe
- More gas given off, faster the reaction
- Plot a graph
- Precipitation
- Collision Theory
- Particles must collide with enough energy to react
- Rate of reaction depends on...
- Frequency of successful collisions, energy of collisions
- Rate of reaction depends on...
- The more successful collisions the faster the rate of reaction
- Increasing the temperature increases rate
- Increasing concentration increases rate
- Smaller solid particles = more surface area
- Means faster rate
- A catalyst increases the rate of reaction
- Particles must collide with enough energy to react
- Identifying Catalysts
- Experiment
- Measure reaction rate of two substances and if the rate increases and the solid is unchanged it may be a catalyst
- Enzymes
- Biological catalysts
- Speed up chemical reactions in living cells
- Reactions can include...
- Respiration
- Photosynthsis
- Experiment
- Dynamic Equilibrium
- Reversible reactions
- They will reach equilibrium
- Dynamic equilibrium means the concentration of reactants and products have reached a balance and wont change
- Three things can change the position of equilibrium
- Temperature
- Pressure
- Concentration
- Reversible reactions
- Reaction Rates
Similar Chemistry resources:
Teacher recommended
Comments
No comments have yet been made