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A student wrote that the solution was red and its volume was sixty millilitres. What types of observations are included?

Answer and explanation

Correct answer: Both qualitative and quantitative

Direct answer: Option C, both qualitative and quantitative. Qualitative observation describes a quality or characteristic without using a number, such as colour, smell, texture, or shape. Quantitative observation includes a numerical measurement, usually with a unit, such as volume, mass, time, or temperature. Here, “red” describes the solution’s colour, so it is qualitative. “Sixty millilitres” gives a numerical volume and unit, so it is quantitative. Therefore the record contains both types. Option A is wrong because it ignores the colour description. Option B is wrong because it ignores the measured volume. Option C is correct because one observation record can contain descriptive and numerical evidence together. Option D is wrong because these statements report observations, not a final conclusion explaining why the solution is red or what the volume means. Exam cue: words describing appearance are usually qualitative; numbers with units are quantitative.

Related tags

QualitativeQuantitativeSolutionVolumeScientific Questions And ObservationsExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary ScienceScience

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