Question

18.
1. Define the term density of a substance.

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Answer 1

Density, mass of a unit volume of a material substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre. ... Density can also be expressed as kilograms per cubic metre (in MKS or SI units).

Answer 2

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✔The mass of a unit volume of a substance is called its density. Relative density of a substance is defined as the ratio between the density of the substance to the density of water at 40C.

✔ Relative density is also known as specific gravity. The relative density of a substance is a pure number without any unit.

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