qīng yǎng huà
hydroxide (e.g. caustic soda NaOH)
qīng yǎng huà nà
caustic soda
sodium hydroxide NaOH
liú huà qīng
hydrogen sulfide H2S
sulfureted hydrogen
qīng yǎng
hydroxide (e.g. caustic soda NaOH)
guò yǎng huà qīng méi
catalase (enzyme)
hydrogen peroxidase
qīng yǎng huà gài
calcium hydroxide Ca(OH)2
slaked lime
zhòng qīng
heavy hydrogen (isotope)
deuterium
qīng lǜ suān
hydrochloric acid HCl
also written 鹽酸|盐酸
sì qīng dà má fēn
Tetrahydrocannabinol, THC
tàn huà qīng
hydrocarbon
same as 烴|烃[ting1]
qīng lǔ suān
hydrohalic acid (e.g. hydrofluoric acid HFl 氫氟酸|氢氟酸[qing1 fu2 suan1], hydrochloric acid HCl 盐酸 etc)
chāo zhòng qīng
tritium
3H
radioactive isotope of hydrogen having 2 neutrons in its nucleus, so atomic weight 3
qīng huà qíng
hydrocyanic acid
hydrogen cyanide
qīng yǎng huà měi
magnesium hydroxide Mg(OH)2
qīng lǜ suān
hydrochloric acid HCl
also written 鹽酸|盐酸