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A student investigates whether the amount of soap affects foam height. Which factor should be controlled?

Answer and explanation

Correct answer: Amount of water

Keeping the amount of water the same ensures that only the effect of soap amount is tested. In exams control other influencing factors.

Related tags

Controlled VariableSoapFoamHeightHypothesis And ExperimentationExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary ScienceScience

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