New Hampshire NH SAS Science Grade 8 Practice Questions - New Hampshire Statewide Assessment System Science - Grade 8 Exam

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A sample of an unknown pure substance is divided into two pieces. Piece 1 has a mass of 12 g and a volume of 4 cm³. Piece 2 has a mass of 24 g and a volume of 8 cm³. What can be concluded about the substance?

The substance is a compound because density changed with sample size. The density of both pieces is the same, 3 g/cm³, because density is an intensive property. Piece 2 is denser because it has more mass than Piece 1. The density cannot be determined without knowing the melting point.

Correct Answer:

The density of both pieces is the same, 3 g/cm³, because density is an intensive property.

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