The volume of an object increases with increasing temperature, because of the matter’s volumetric thermal expansion. Therefore, according to equation [1], the density of an object depends on its temperature, with higher temperature resulting in lower density. Exception is water in temperature range 0-4 °C, for which the density increases with increasing temperature. The density of a gas further depends on the pressure as well. Nevertheless, this effect is negligible in a case of liquid and/or solid matter.
The volume of an object increases with increasing temperature, because of the matter’s volumetric thermal expansion. Therefore, according to equation [1], the density of an object depends on its temperature, with higher temperature resulting in lower density. Exception is water in temperature range 0-4 °C, for which the density increases with increasing temperature. The density of a gas further depends on the pressure as well. Nevertheless, this effect is negligible in a case of liquid and/or solid matter.
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