In solid, atoms are spaced closer than in liquid, as shown in Figure 2. Density of a substance is defined as its mass per unit volume. Therefore, density of a solid is typically greater than the density of liquid. However, this is not true for ice (solid water) and liquid water as the density of solid is less that the liquid (Ice floats in water). Explain why this discrepancy occurs in terms of the mass and volume. Solid Liquid Gas
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