氨

ān

ammonia

10 丶

基

jī

foundation, base

HSK 4 11 丶

甲

jiǎ

armor, shell; fingernails; 1st heavenly stem

HSK 5 5 丶

酸

suān

tart, sour; spoiled; acid

HSK 4 14 丶

酯

zhǐ

ester

13 丶

类

lèi

category, class, group, kind; similar to; to resemble

HSK 5 9 丶

化

huà

to change, to convert, to reform; -ize

HSK 3 4 丶

合

hé

to combine, to join, to unite; to gather

HSK 4 6 丶

物

wù

thing, substance, matter; creature

HSK 3 8 丶