ash

ash; ashes

lye, originally the clear alkaline liquid left after leaching wood ash in water / scum, the coagulated proteins and fats that gather on the surface of a pot of boiling food

to react chemically / to respond, to react / be responsive, be sensitive

chemical reaction / reaction, response / feedback

to do an experiment

Synonym of 炭酸水 (tansansui, “carbonated water”); soda water

(inorganic chemistry) caustic soda

chemistry (branch of natural science)

probation