Either:
The quantity of the reactant used / time taken
or
The quantity of the product formed / time taken
1 of 11
What unit of quantity of reactant or product ?
Either:
Mass in grams
or
Volumes in cm cubed
2 of 11
What is the unit of rate of reaction?
Either:
g/s
or
cm cubed/s
3 of 11
What are the 5 factors affecting the rate of chemical reactions?
The concentrations of reactants in solutions
The pressure of reacting gases
The surface area of solid reactants
The temperature
The presence of a catalyst
4 of 11
What is collision theory?
Chemical reactions can occur only when reacting particles collide with each other and with sufficient energy.
5 of 11
What is activation energy?
The minimum amount of energy that particles must have to react.
6 of 11
How does increasing the concentration of reactants increase the rate of reaction?
It increases the frequency of collisions and so the rate of reactions
7 of 11
How does increasing the pressure of reacting gases increase the rate of reaction?
It increases the frequency of collisions and so the rate of reactions
8 of 11
How does increasing the surface area of solid reactants increase the rate of reaction?
It increases the frequency of collisions and so the rate of reactions
9 of 11
How does increasing the temperature increase the rate of reaction?
It increases the frequency of collisions and so the rate of reactions
(and makes the collisions more energetic)
10 of 11
How do catalysts increase the rate of reaction?
They provide a different pathways for the reaction that has a lower activation energy
11 of 11
Other cards in this set
Card 2
Front
What unit of quantity of reactant or product ?
Back
Either:
Mass in grams
or
Volumes in cm cubed
Card 3
Front
What is the unit of rate of reaction?
Back
Card 4
Front
What are the 5 factors affecting the rate of chemical reactions?
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