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.
(klÄm) tr.v. claimed, claimÂ·ing, claims. 1. To demand, ask for, or take as one's own or one's due: claim a reward; claim one's luggage at the airport carousel. 2. To take in a violent manner as if by right: a hurricane that claimed two lives.