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Matter in Our Surroundings — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceMatter in Our Surroundings3 Marks
Question
Why do solids are generally denser than liquids and gases?
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Answer

Density of a substance is given by a formula
Density $=\frac{\text{Mass}}{\text{Volume}}$
In case of solids the molecules are tightly packed and hence large mass is concentrated in very small volume. Hence their density is more. But in case of liquids and gases, their molecules have intermolecular space and hence they don’t have large mass concentrated in small volume. So the density of solids is generally more than that of the liquids and gases.

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