What Is the Density of a Glass Marble?


Quick Answer

The density of glass varies between 2.2 and 5.9 kilograms per cubic meter, though values closer to 2.5 are more usual. Common glass has a density between 2.4 and 2.8 and is inexpensive enough for glass marbles.

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What Is the Density of a Glass Marble?
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Full Answer

For simple marble manufacturing, softer glasses are preferred as they are easier to heat and work. Harder glasses are more difficult to work but break less easily, a property that is desirable for toys meant for young children. Pyrex glass, a common and inexpensive hard variety of glass, has a density of 2.2, which is particularly low but not far from common glass.

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