Glossary of chemical terms

unified atomic mass unit
	Unified atomic mass unit (u or mu) is a unit of mass used in atomic, molecular, and nuclear science, defined as the mass of one atom of 12C divided by 12. Its approximate value is u = (1.660 565±0.000 008 6)∙10-27 kg.
unit cell
	Unit cell is the smallest fragment of the structure of a solid that by repetition can generate the entire structure.
unsaturated hydrocarbons
	Unsaturated hydrocarbons are organic compounds containing double (alkenes) or triple (alkynes) bonds in its molecules.
unsaturated solution
	Unsaturated solution is a solution that contains less than the maximum possible equilibrium concentration of a solute.

 

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