alkali

alkali - noun

any of various water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water

a mixture of soluble salts found in arid soils and some bodies of water; detrimental to agriculture

alkali - thesaurus

Scrabble score = 10

"I love your course..... you explain so much that I didn't know, forgot, or wasn't taught."

Adult student, USA