Hòa-ha̍k bu̍t-chit

Hoà-ha̍k bu̍t-chit (化學物質), he̍k-chiá sûn-bu̍t-chit (純物質), sī iû kang chióng hun-chú ia̍h kāng chióng goân-chú kò͘-sêng ê bu̍t-chit.  Kū-iú kò͘-tēng ê hoà-ha̍k sèng-chit kap bu̍t-lí sèng-chit. Kin-kì só͘ hâm-iú ê bî-lia̍p sèng-chit ê bô-kāng-khoán, ē-sái hun-lūi chò tan-chit kap hoà-ha̍k-bu̍t.

E̍k-thài-chúi kap chúi-cheng-khì sī bô-kāng hêng-thài ê kāng chióng hoà-ha̍k bu̍t-chit.

Hoà-ha̍k bu̍t-chit bōe-sái iōng bu̍t-lí ê hong-hoat lâi hun-lī. Kî-tiong ē-sái lī-iōng hoà-ha̍k hong-hoat koh-chài hun-chhut koh-khah kán-tan ê bu̍t-chit hō-chò hoà-ha̍k-bu̍t.