1. Reaction Rates
Popcorn Activity

2. Step 1 Count how many pieces of popcorn you have
Record how many pieces of popcorn were eaten every 20 seconds for 5 min
Create a graph of pieces of popcorn left vs. time
This is the idea of concentration vs. time

3. Why are some collisions effective and others not?
Orientation
How fast they hit

4. For A products r=-k[A] For A + B  products
K is the reaction constant
r is the rate of reaction (moles or Molarity decreasing over unit time)
A is the concentration or quantity of reactant
For A + B  products
r= - k [A]m[B]n
m and n refer to how reactant A and B concentration change the rate

7. Overall reaction order
A certain rate law is given as Rate=k[H2]1[Br2]1/2
What is the reaction order?
x=1,y=1/2
Reaction order=x + y =1+1/2=3/2
The reaction is first-order in hydrogen, one-half-order in bromine, and 3/2-order overall.