A student observed that the rate of a chemical reaction increased as the temperature of the system increased. Which of the following statements best explains why thermal energy caused an increase in the reaction rate?
A. The surface area of the product particles decreased.
B. The collision rate of the reactant particles increased.
C. The concentrations of the reactant particles increased.
D. The concentrations of the product particles decreased.
The answer is "B. The colllision rate of the reactant particles increased." because as you increase the temperature, the particles move faster and the faster the the particles move, the faster their collision rate.!!!
