
Acid | Definition, Examples, Types, Uses, & Facts | Britannica
Oct 18, 2025 · 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 …
Acid - Simple English Wikipedia, the free encyclopedia
The definition of an acid has changed as people discovered more about chemistry. Acids were originally grouped together by their properties: they taste sour, change the color of litmus …
What Makes an Acid Acidic? The Chemistry Explained
Nov 20, 2025 · Learn the fundamental chemistry defining acids, how their strength is measured by dissociation, and how the logarithmic pH scale works.
ACID Definition & Meaning - Merriam-Webster
Not only does acid brighten your soup, but also balance the flavor including the saltiness that comes from the broth (store-bought chicken broth and stock, or bouillon, are typically high in …
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 …
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 …
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 …