This graph shows the rates of reaction in a chemical reaction as the temperature is changing. Explain the shape of the line.

This graph shows the rates of reaction in a chemical reaction as the temperature is changing.

·                    Explain the shape of the line. What is happening to the reaction rate as the temperature increases?

·                    Explain what the increase in temperature does to the particles that are reacting. 

·                    Why does the curve of the reaction rate first steepen and eventually flatten out?