Dec 12, 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, …

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 …

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.

Hydrochloric acid (in beaker) reacting with ammonia fumes to produce ammonium chloride (white smoke). Acids can be dangerous: The holes in the paper were made by a solution with 98% …

Basic rocks with no quartz tend to be dark-colored, while acid rocks are much lighter. The solid matter ejected by a volcano covers all rock compositions from basic to acid.

5 days ago · Learn what an acid and base are, how the pH scale works, and see everyday acids and everyday bases explained with simple definitions and real-life examples.

Sep 24, 2025 · What Is an Acid in Chemistry? Acids are one of the most important groups of chemicals, found everywhere from household products to industrial processes. They are …

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 …

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 …

Definition of acid noun from the Oxford Advanced American Dictionary. a chemical, usually a liquid, that contains hydrogen and has a pH of less than seven. The hydrogen can be replaced …