Topic 7 Rate Of Reaction/Collison Theory Flashcards
What is the rate of reaction?
A measure of how fast reactions are used up or how quickly products are made
What is the rate affected by?
Particle size
Temperature the reaction is done at
Concentration
What’s the equation for rate?
change in amount of reactants / products
____________________________________________
time
what are the 3 variables
Independent - what we change
dependent - what we measure
control - what we keep the same
What is collision theory?
the reactant molecules must collide with enough energy for a chemical reaction to occur
What’s the effect of concentration on the rate
increasing concentration increases rate of reaction because more collisions occur therefore reaction speeds up
What’s the effect of particle size on rate?
decreasing particle size increases the surface area allowing more collisions to happen
What’s the effect of temperature on the rate?
the higher the temperature the more energy particles have therefore increasing the rate of
