🌈 Rainbow Mind Map Relative density
Introduction - Relative density is used to compare the density of a substance with respect to density of water at 4⁰C. Relative density of mercury is 13.6 means it is 13.6 times denser than water.
● Definition- Relative density of a substance is the ratio of density of a substance to the density of water.
● Relative Density of a substance = Density of a substance ÷ Density of water
● Relative density of a substance = Mass of a substance of certain volume ÷ Mass of same volume of water.
● R.D of liquid = M3-M1/ M2-M1 (using density bottle)
● R.D has no unit.
● Density = R.D g/cm³
= R.D x1000 kg / m³
● Relative density of water is 1.
● If R.D of a body is more than 1, it will sink in water.
If R.D of a body is less than 1 , it will float in water.
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