Signification visuelle de 'alkali'? - apprendre avec des images, exemples du quotidien

noun

Alcali

One of a class of caustic bases, such as soda, soda ash, caustic soda, potash, ammonia, and lithia, whose distinguishing peculiarities are solubility in alcohol and water, uniting with oils and fats to form soap, neutralizing and forming salts with acids, turning to brown several vegetable yellows, and changing reddened litmus to blue.

""The cleaning solution contained a strong alkali, so we had to wear gloves to protect our skin." "

La solution de nettoyage contenait un alcali puissant, nous avons donc dû porter des gants pour protéger notre peau.

chemistry substance compound material science

noun

Matières minérales alcalines

(Western United States) Soluble mineral matter, other than common salt, contained in soils of natural waters.

"The farmer tested the soil and found a high level of alkali, which could prevent his crops from growing well. "

L'agriculteur a analysé le sol et a trouvé un niveau élevé de matières minérales alcalines, ce qui pourrait empêcher la bonne croissance de ses cultures.

geology chemistry environment substance mineral agriculture