Rates of Reactions
Define a Rate of a Chemical Reaction
The speed at which products are formed per some unit of time
The same
N2 + 3H2 <--> 2NH3 + heat. Which way does the system shift when N2 is added?
To the right
The average kinetic energy of a substance, this controls particle movement speed
Temperature
Where electrons are located in the atom?
The electron cloud
If concentration is increased the rate of the chemical reaction will...
Increase!
The forward and reverse reactions have stopped at equilibrium, true or false?
False
N2 + 3H2 <--> 2NH3 + heat. Which way does the system shift when NH3 is removed?
To the right
The amount of a substance per some amount of volume
Concentration
Decreasing the temperature ______________ the rate of the reaction
Decreases
The concentrations of reactants and products are ________ at equilibrium
Constant
Define Le Chatelier's Principle
A system shifts to reduce change
A substance that increases the rate of a reaction without being used up!
A Catalyst
Mr. Pulliam sponsors this/these club(s) at Clarke Central!
Decreasing the particle size increases the _____________ which increases the rate of a reaction
Surface Area
Define Equilibrium
When the forward and reverse reaction are occurring at the same time and same rate.
N2 + 3H2 <--> 2NH3 + heat. What happens to the concentration of [NH3] when heat is added to the system?
The concentration decreases
The amount of energy needed for a reaction to occur
Activation Energy
This substance absorbs UV radiation in the atmosphere
Ozone
Catalysts reduce the rate of a chemical reaction by...
Decreasing the activation energy
Draw a graph of concentration (y) vs time (x) for a system that has reached equilibrium
Mr. Pulliam will draw on the board!
N2 + 3H2 <--> 2NH3 + heat. What happens to the concentration of[N2] when H2 is added to the system?
It decreases
This US President was posthumously awarded the Medal of Honor for his actions during the Cuban War of Independence
Theodore Roosevelt