New! PrivateView
BetaNew! PrivateView
BetaNew! PrivateView
BetaNew! PrivateView
BetaNew! PrivateView
BetaNew! PrivateView
BetaNew! PrivateView
BetaNew! PrivateView
BetaNew! PrivateView
BetaNew! PrivateView
BetaA chemical substance is a unique form of matter with constant chemical composition and characteristic properties. Chemical substances may take the form of a single element or chemical compounds. ... In addition to the generic definition offered above, there are several niche fields where the term "chemical substance" may take alternate ...
Wikipedia