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Class 9 Science Exploration: Entering the World of Secondary Science Variables in an experimentHard

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Reaction rate was measured at four temperatures but a catalyst was also added in the highest-temperature trial. Why is the conclusion doubtful?

Answer and explanation

Correct answer: The catalyst became a second influential independent factor

A catalyst can also change reaction rate so two factors changed together. Change only one independent variable at a time.

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Confounding Variable Catalyst Reaction Rate Variables In An Experiment Exploration: Entering The World Of Secondary Science Exploration Entering The World Of Secondary Science Science Class 9 Mcq

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