Label the diagram
Exothermic or Enothermic
Vocab
100
A
Energy of the reactants (starting energy)
100
If a reaction gives off energy it is considered what?
Exothermic
100
the potential energy stored in reactant bonds
starting energy
200
B?
Activation energy
200
If the ΔH is positive, what is the reaction?
Endothermic
200
total change in energy from reactants to products
ΔH
300
C?
activation energy of the reverse
300
When the net energy released is negative
Exothermic
300
Energy stored in the bonds of the products
ending energy
400
D
ΔH
400
What is A?
Endothermic
400
The amount of energy it takes for the reaction to begin
activation energy
500
E
Energy of the products
500
In an Endothermic reaction where does the energy for the reaction come from.
Its surroundings
Example a cold pack is an endothermic reaction that pulls the energy from the surrounding environment into the cold pack. Because energy must be added to the system(The cold pack) the reaction is endothermic.
500
the energy of the intermediate structures between the reactants and products
Activated complex