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  1. ACID - Wikipedia

    In computer science, ACID (atomicity, consistency, isolation, durability) is a set of properties of database transactions intended to guarantee data validity despite errors, power failures, and other mishaps.

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

    Mar 6, 2026 · What is an acid, as defined in chemistry? 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 …

  3. What Is an Acid and a Base? Chemistry Explained

    Mar 19, 2026 · An acid is a substance that releases hydrogen ions in water, while a base is a substance that releases or accepts those ions. That simple difference drives everything from the sour taste of …

  4. 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 litmus, and …

  5. 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 reaction that …

  6. ACID Definition & Meaning | Dictionary.com

    An acid is the opposite of a base and has a pH of 0 to 7. A given amount of an acid added to the same amount of a base neutralizes the base, producing water and a salt.

  7. 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 acid …

  8. What Is an Acid? Definition, Examples, and pH Scale

    Jul 30, 2025 · Acids are defined by their behavior in solution. One common definition, known as the Brønsted-Lowry theory, describes an acid as a substance capable of donating a proton, a hydrogen …

  9. What Is An Acid? Definition, Types, Examples, Uses, & Facts

    Dec 21, 2025 · Acids are substances that release hydrogen ions (H⁺) in water. They have distinct properties, like a sour taste and reactivity with metals. Acids are classified by their strength, source, …

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

    Chemistry doesn't have to be just for seasoned scientists! Read here to learn what is an acid, and how acids work in chemistry.