Chemistry Topic 6 Flashcards
What is the rate of chemical reaction
How fast the reactants are changed into products
How does the steepness of a line on growth affect rate of reaction
Steeper the line faster the rate of reaction. Over time it becomes less steep as reactions are used up
The quickest reactions have the what lines
Steepest lines and become flat in least amount of time
What does the rate of reaction depend on
Temperature surface area concentration and catalyst
How does increasing temp increase rate
Particles move faster collide more frequently
How does increasing pressure or concentration affect rate
More concentration means more particles
Pressure increased means there’s smaller space so collisions increase
How does surface area affect rate
Particles will have more areas to work on if the surface area is larger
How does using a catalyst affect the rate
Catalyst speeds up reactions without being used up. Different catalysts are used for different reactions, they decrease activation energy by providing a alternate pathway
Rate of reaction =
Amount of reactant used or amount formed
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Time
Experiment
Experiment
