s_{1} is a molecule of chemical x_{2}.

c.f. selci, xukmi, ratni, lektoni, protoni, nurtoni.

- cmuxu'i
- x
_{1}is an element of kind x_{2}with purity x_{3}. - estre
- x
_{1}is an ester derived from acid x_{2}and alcohol x_{3} - ionti
- x
_{1}is an ion of radical/(atom of element)x_{2}with x_{3}charges - lektoni
- x
_{1}is an electron in quantum state x_{2} - nurtoni
- x
_{1}is a neutron in quantum state x_{2}. - protoni
- x
_{1}is a proton in quantum state x_{2}. - ma'u zei ionti
- x
_{1}is an cation of radical/(atom of element)x_{2}with x_{3}charges. - ni'u zei ionti
- x
_{1}is an anion of radical/(atom of element)x_{2}with x_{3}charges.