mass divided by volume
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Density is defined as the mass of an object divided by its volume. It is a characteristic property of a substance and depends on its composition. Objects with greater density will sink in fluids with lower density and float in fluids with higher density.
One example of a substance that does not follow the general rules of density is ice. Ice is less dense than liquid water, which is why it floats. Another example is aerogel, which is a solid material that is extremely porous and has a very low density compared to its volume.
To calculate the relative density of a substance, you divide the density of the substance by the density of water. The formula is: Relative Density Density of Substance / Density of Water. The relative density is a measure of how dense a substance is compared to water.
Mass and volume are related to the sinking and floating of an object through their density. An object will sink if its density is greater than the density of the fluid it is placed in, and will float if its density is less than the density of the fluid. The relationship can be expressed as density = mass/volume.
Density is a measure of how much mass is contained in a given volume of a substance, while relative density compares the density of a substance to the density of a reference substance (usually water). Relative density is dimensionless and is often used to identify substances or determine their purity based on their comparison to a standard substance.
The relative density of an object is determined by comparing its density to the density of water. It is calculated by dividing the density of the object by the density of water. If the relative density is less than 1, the object will float in water; if it is greater than 1, it will sink.