What is the relative density?

density is a measure of how much weight is present in a given volume of matter. Relative density is a comparison of the density of one material with the density of a particular standard, such as water, at a given temperature or pressure. Relative density is also known as a specific weight.

The density is most often calculated in metric units. A widely used option is a grams density in a cubic centimeter (g/cm

3 .

The mass is the amount of matter in the substance and inertia of this substance. It is different from weight, because the weight may change with changes in gravity on the object. For example, the building is harder on Earth than on the moon, because there is less gravity on the moon. However, the mass remains the same in both cases. The necessary equation is density = weight / volume . As example, 1 gram of water occupies 1 cubic centimeter of volume. A circular centimeter is also known as a milliliter when reference to liquids so the equation for densityWater would be 1g / 1ml . The density is therefore equal to 1 g/ml, which can also be expressed as 1 g/cc or 1 g/cm 3 .

density measurement requires units and volume to be included in the answer. Relative density, on the other hand, is only a comparison of densities between two substances as a ratio, so the units are not necessary. For example, the relative density of one sample of water into another sample of water is 1.0 g/ml: 1.0 g/ml, and because the units on both sides are canceling each other, the final answer is simply at 1.0.

Water is usually used as a standard for calculating relative density for solids and liquids. This is useful because the fabric is compared to a joke fabric that has a simple density of 1 g/ml. A standard gas standard can be used for gases. Material density may vary according to pressure and environmental temperature, so standard density is limited to a specific temperature or for gasesspecific pressure.

The use of water as a standard, substances that are heavier than water, such as gold, lead to relative density values ​​that are higher than 1.0. Gold has a relative density of 19.30 and conventional table salt relative density 2.16. Less dense materials have a value of less than 1.0, such as ammonia to 0.8974 or pine sticks at approximately 0.50.