Skip to main content

noun

alkali

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

In a sentence

Six example sentences with alkali, each labelled with its topic.

  • Pretzels get their brown skin from a quick dip in alkali before baking, which is why bakers wear gloves.

    Cooking

  • A spoonful of alkali dropped into the flask neutralised the vinegar, and the fizzing stopped within a few seconds.

    Science

  • Farmers spread lime, a cheap alkali, across sour upland soil so that grass will grow where nothing did before.

    Environment

  • Medieval soap makers boiled animal fat with an alkali leached from wood ash, and the reaction turned the grease into soap.

    History

  • Fresco painters use only pigments that resist alkali, since the wet lime plaster would bleach anything weaker within days.

    Art

  • Lime mortar is a mild alkali, and it slowly hardens as it draws carbon dioxide out of the air over decades.

    Architecture

Study alkali until you keep it

Learn English words in sentences about topics you pick, with a quick quiz. With an account, words come back for review.

Found in these word lists

Each source is a published word list that contains alkali. No exam board publishes an official GRE, GMAT or SAT list; GMAT words come from GRE lists and the Academic Word List.