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Depending on the quantity of particles, especially molecules or ions, but not on their chemical nature: colligative properties.
(General Physics) (of a physical property of a substance) depending on the concentrations of atoms, ions, and molecules that are present rather than on their nature
col•li•ga•tive(ˈkɒl ɪˌgeɪ tɪv)
(of the properties of a substance) depending on the number of molecules or atoms rather than on their nature.