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A student concludes that sugar always dissolves faster in hot water after only one trial. What is the main weakness of this conclusion?

Answer and explanation

Correct answer: A universal conclusion cannot be drawn from only one trial

Option A is correct because one trial is not enough to support a universal claim such as “always.” The result may be influenced by factors such as the amount of water, sugar particle size, stirring rate, or measurement error. Temperature can be measured with a thermometer and can be the independent variable in an experiment, so B and D are incorrect. Exam tip: Before making a general conclusion, repeat a controlled experiment and compare the average results.

Related tags

Scientific InvestigationRepeat TrialsVariablesEvidence Based ConclusionDissolvingScientific Questions And ObservationsExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary Science

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