化作

to change into / to turn into / to become

variant of 花[hua1]

to make into / to change into / -ization / to ... -ize / to transform / abbr. for 化學|化学[hua4 xue2]

worker / workshop / (slang) troublesome / high-maintenance (person)

to do; to engage in / to write; to compose / to pretend; to feign / to regard as; to consider to be / to be; to act the part of / to feel (itchy, nauseous etc) / writings; works

catalysis

photochemical effect / photosynthesis / photolysis

assimilation / anabolism (biology) / constructive metabolism (using energy to make proteins etc)

alkylation

catabolism (biology) / metabolic breaking down and waste disposal / dissimilation

chemotaxis (movement of leukocytes under chemical stimulus)

weathering (of rocks) / erosion (by wind etc)