Samples of different materials, A and B, have the same mass, but the sample of A is higher in density. Which statement could explain why this is so?

A. The particles that make up material A have more mass than the particles that make up material B.
B. The particles that make up material B have more mass than the particles that make up material A.
C. The sample of material A has greater volume than the sample of material B.
D. The particles that make up material B are more closely packed together than the particles that make up material A.

Density is a property that relates the mass of a material to its volume. The density of a material can be higher even if samples have the same mass due to differences in volume. In the given scenario, the denser sample (material A) has more mass packed into a smaller volume compared to the less dense sample (material B).

For example, if you compare gold and aluminum, both having the same mass but gold is denser because its atoms are packed more closely, resulting in a higher density. On the contrary, materials like feathers and bricks can have the same mass, but feathers occupy more volume due to their lower density.

Understanding density helps in identifying materials and their composition, revealing information about their phase of matter and substructure. So, in the context of samples A and B, the higher density of material A indicates that its particles are more tightly packed together.

Learn more about Density and Materials here:

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