Mass is the product of density and volume (m = D x V) while density is ratio of mass per volume (D = m / V). Summary: 1.Mass is how much matter is present in a particular object. 2.Density is how much mass is present per unit of volume.
asâ¢sert /ÉËsÉrt/USA pronunciation v. [~ + object] 1  to state strongly or positively; declare strongly:asserted his innocence.[~ + (that) clause]asserted that he was innocent of the crime. 2  to make a claim to:Minorities are now asserting their right to be heard.
Definition of Claim. 1  an assertion of a right (as to money or property); his claim asked for damages. 2  an assertion that something is true or factual; his claim that he was innocent; evidence contradicted the governments claims. 3  demand for something as rightful or due; they struck in support of their claim for a shorter work day.