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  1. Acid | Definition, Examples, Types, Uses, & Facts | Britannica

    May 20, 2025 · An acid is any substance that in water solution tastes sour, changes blue litmus paper to red, reacts with some metals to liberate hydrogen, reacts with bases to form salts, …

  2. Acid - Simple English Wikipedia, the free encyclopedia

    There are two main definitions of acid used by chemists today. A Brønsted–Lowry acid is a chemical that can donate a hydrogen ion (H+) (generally speaking, this will be a proton) to …

  3. What Is an Acid in Chemistry? Definition and Examples

    Feb 14, 2023 · In chemistry, an acid is a chemical species that donates hydrogen ions or protons or accepts an electron pair. Acids react with bases and some metals via a neutralization …

  4. Acid: Definition and Examples in Chemistry - ThoughtCo

    Jan 13, 2020 · An acid is a chemical that gives away protons or accepts electrons, like vinegar or lemons. There are different kinds of acids, like Arrhenius, Brønsted-Lowry, and Lewis acids.

  5. ACID Definition & Meaning - Merriam-Webster

    The meaning of ACID is a sour substance; specifically : any of various typically water-soluble and sour compounds that in solution are capable of reacting with a base to form a salt, redden …

  6. 6.1: What is an Acid and a Base? - Chemistry LibreTexts

    An acid is a substance that forms hydrogen ions H + when dissolved in water, and A base is a substance that forms hydroxide ions OH - when dissolved in water. For example, hydrochloric …

  7. What is an Acid? A Complete Overview of Acids in Chemistry

    Let’s discuss the question: “What is an acid?”, and take a look at three of the most common acid definitions in chemistry! Overview of Acids In life, acids can be extremely variable in form and …

  8. ACID Definition & Meaning | Dictionary.com

    Acid definition: a compound usually having a sour taste and capable of neutralizing alkalis and reddening blue litmus paper, containing hydrogen that can be replaced by a metal or an …

  9. Acids – Definition, Types, Examples, Properties, Uses

    Jul 10, 2024 · In simple terms, acids are substances that taste sour and can turn blue litmus paper red, indicating their acidic nature. They’re known for their ability to react with bases to …

  10. ACID definition and meaning | Collins English Dictionary

    An acid is a chemical substance, usually a liquid, which contains hydrogen and can react with other substances to form salts. Some acids burn or dissolve other substances that they come …