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In general, as temperature rises, so does reaction rate. This is because the rate of reaction is dependent on the collision of the reacting molecules or atoms. As temperature rises, molecules or atoms respond with increased motion, increasing the collision rate, thus increasing the reaction rate.
If the solid is divided into smaller pieces, then there is greater surface area; therefore, more particles are able to react, and the reaction rate increases. Effect of temperature on reaction rate: An increase in the temperature of reactants usually results in an increase in the reaction rate.n this experiment, you will study various conditions and the effect they have on the collision of molecules. You will observe the effects of temperature, concentration, particle size (surface area), and catalysts on the rates of chemical reactions and then explain these effects in terms of the collision theory.