alkali
/ˈæl.kə.laɪ/
B2 · Upper Int.★★☆☆☆
Simple Meaning
一种能与酸混合生成盐的物质，如小苏打或肥皂。
When to Use
📚Academic Writing⚙️Technical
Upper Intermediate — fluent in familiar topics
Examples in Conversation
“你可以用小苏打这样的碱来清洁烤箱。”
“化学课上，我们测试了哪些液体是酸性的，哪些是碱性的。”
Learning Path
▶Full Definition
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.