Energy (kJ)
400
B
300
200
100
A
0
20
Time(s)
C
Use the diagram above to explain how energy is involved in a chemical reaction and why all
reactions require activation energy.
To earn full points you MUST discuss:
•
.
What is happening in the graph at points A, B, and C.
• What is happening to the energy during a chemical reaction?
• What is happening to the particles during a chemical reaction?
Activation Energy
⚫ Define and explain why all reactions require it
Endothermic/Exothermic
• Identify and explain how you know
