Specific gravity is the ratio of a material’s density with that of water at 4 °C (where it is most dense and is taken to have the value 999.974 kg m – 3 ). It is therefore a relative quantity with no units .
What is specific gravity in simple words?
Specific Gravity (SG) is a special case of relative density. It is defined as the ratio of the density of a given substance, to the density of water (H 2 O) . Substances with a specific gravity greater than 1 are heavier than water, and those with a specific gravity of less than 1 are lighter than water.
What is specific gravity answer?
The specific gravity of an object is the ratio between the density of an object to a reference liquid . ... The specific gravity has no units. If the specific gravity has a value of greater than one, then the object sinks in water and if it is less than one, then the object floats in water.
What is the unit and dimension of specific gravity?
So, the dimensional formula of specific gravity will be = ML−3ML−3=M0L0 . Therefore the units of density cancel out each other and the specific gravity becomes dimensionless.
What is specific gravity answer in one sentence?
Scientific definitions for specific gravity
The relative density of a solid or liquid , usually when measured at a temperature of 20°C, compared with the maximum density of water (at 4°C). For example, the specific gravity of carbon steel is 7.8, that of lead is 11.34, and that of pure gold is 19.32.
What is specific gravity example?
Specific gravity, also called relative density, ratio of the density of a substance to that of a standard substance . ... For example, liquid mercury has a density of 13.6 kg per litre; therefore, its specific gravity is 13.6.
What is the use of specific gravity?
Specific gravity can be used to determine if an object will sink or float on water . The specific gravity of water is equal to one. If an object or liquid has a specific gravity greater than one, it will sink. If the specific gravity of an object or a liquid is less than one, it will float.
Why is it called specific gravity?
The correct (and more meaningful) term is relative density. Why specific? Usually specific means that the quantity does not depend on how much you consider , if you take 1 L of ethanol or 2 liters – they have the same SG because you need to compare it with the same amont of water and the volume goes away in the ratio.
What is specific gravity test?
Urine specific gravity is a laboratory test that shows the concentration of all chemical particles in the urine .
What is density and specific gravity?
Density is defined as mass per unit volume. It has the SI unit kg m – 3 or kg/m 3 and is an absolute quantity. Specific gravity is the ratio of a material’s density with that of water at 4 °C (where it is most dense and is taken to have the value 999.974 kg m – 3 ). It is therefore a relative quantity with no units.
How do you measure specific gravity?
The best way to measure specific gravity is to weigh a container and record its weight, then weigh the container full of water and full of the liquid of unknown specific gravity . Subtract the weight of the container from each weight and divide the weight of the liquid being measured by the weight of the water.
What is the dimension of strain?
Therefore, the dimensional formula of strain represented as [M0L0T0] , which is a Dimensionless Quantity.
What is the specific gravity of blood?
The specific gravity (relative density) of human whole blood and plasma from 25 healthy volunteers was determined gravimetrically. For whole blood it was found to be 1.0621 (95% confidence interval: 1.0652-1.0590) at 4 °C and 1.0506 (95% confidence interval: 1.0537-1.0475) at 37 °C.
What is specific gravity of pure water?
In less dense liquids the hydrometer will float lower, while in more dense liquids it will float higher. Since water is the “standard” by which other liquids are measured, the mark for water is probably labeled as “ 1.000 “; hence, the specific gravity of water at about 4°C is 1.000.
What is specific gravity bottle?
Specific gravity bottles determine liquid densities by measuring the difference between an empty and filled bottle and dividing by an equal volume of water to find the specific gravity of the substance . These bottles are also known as a density bottle or relative-density bottles.
What does a specific gravity of 1 indicate?
Relative density, or specific gravity, is the ratio of the density (mass of a unit volume) of a substance to the density of a given reference material. ... If the relative density is exactly 1 then the densities are equal ; that is, equal volumes of the two substances have the same mass.
