Question

A glow stick contains a glass vial with chemicals. When the glow stick is bent, the vial breaks and the chemicals react to produce a glow. A science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. What conclusion can be drawn based on the observation? Be sure to note the outcome and test variables in the conclusion.

Answer 1

A glow stick glows for a longer duration because freezing slows down the rate of reaction,Because according to collision theory when the reactant particles collide less frequently, and are less likely to react when they do collide.
When the temperature is raised,activation energy is decreased,thus increasing the kinetic energy to overcome the threshold collision frequency, which is required for effective collision. More collision means more fast the rate of reaction,thus the glow stick glows more but for less period of time.

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