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A student hypothesizes that smaller particles of the same mass will react faster than larger particles. Which experimental setup would test this hypothesis most fairly?

Answer and explanation

Correct answer: React small and large particles of the same substance and mass with reactant of the same concentration

Keeping substance mass and reaction conditions constant isolates the effect of particle size. In exams change only the independent variable at a time.

Related tags

Particle SizeReaction RateFair TestSurface AreaHypothesis And ExperimentationExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary ScienceScience

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