Now it is time to design your own experiment to test how particle size (or surface area) affects reaction rate. Answer the next seven questions about your experiment that tests the effect of particle size on reaction rate.

Question

Now it is time to design your own experiment to test how particle size (or surface area) affects reaction rate. Answer the next seven questions about your experiment that tests the effect of particle size on reaction rate.

1) What would be your hypothesis for the experiment? (What do you think the answer is to your scientific question and why?)

Hint: You are welcome to use the alka seltzer tablet and water reaction again to design this experiment that tests the effect of particle size on reaction rate. You are not required to use the alka seltzer experiment, you could design a different experiment but it must test particle size affect on reaction rate.

Answer 1

Hypothesis: The smaller the particle size (or larger the surface area), the faster the reaction rate will be. This is because smaller particles (or larger surface area) will have more exposed reactive sites allowing for more collisions with other particles, leading to a higher reaction rate.

Answer 2

1) Hypothesis: I hypothesize that as the particle size decreases (or surface area increases), the reaction rate will increase. This is because when the particle size decreases, there will be a larger surface area available for the reactants to come into contact with each other. Hence, there will be more chances for successful collisions between the reactant particles, leading to a faster reaction rate.