A student investigating four uniform solid samples records the following experimental data: Sample W has a mass of 54.0 g and displaces 6.0 cm³ of water, Sample X has a mass of 36.0 g and displaces 4.0 cm³ of water, Sample Y has a mass of 45.0 g and displaces 3.0 cm³ of water, and Sample Z has a mass of 72.0 g and displaces 9.0 cm³ of water. Based on this investigation, which statement correctly identifies the samples that could be made of the same pure substance and provides the valid scientific reasoning?

A) Samples W and X, because density is an intensive property and both samples exhibit the same mass-to-volume ratio of 9.0 g/cm³.

B) Samples X and Z, because their masses are exact multiples of each other, indicating a direct proportional relationship in composition.

C) Samples W and Z, because they have the greatest water displacement values, showing that sample volume determines substance identity.

D) Samples Y and Z, because subtracting their measured mass and volume values produces equivalent differences across both samples.

Density Transitional Reasoning Practice

Chemistry · Matter · Chemistry · Properties & Changes of Matter

1 Chemistry practice questions on Density. Questions that build towards applied reasoning.

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