Chemistry

Compositional and/or structural characteristics of molecules

Materials: 2

Preferential abundance of structural or spatial isomers (stereoisomers or constitutional isomers) inconsistent with known abiotic processes or sources

Materials: 1

Relative abundance of related chemical monomers

Materials: 2

Concentration of elements and molecules in specific ratios within delineated systems.

Materials: 2

Relative abundance of isotopes between or within molecules

Materials: 5

Presence or relative abundance of chemical compounds that are reactive under conditions and/or timescales relevant to biological processes

Materials: 0

Functional manifestation of one or more chemical compounds

Materials: 1

Progress toward equilibrium in abiotically sluggish reactions

Materials: 0

Features of crystalline substances such as crystal structure, mineral impurities, and grain size distributions.

Materials: 1