
Acid | Definition, Examples, Types, Uses, & Facts | Britannica
Dec 12, 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 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 …
ACID Definition & Meaning - Merriam-Webster
Savannah police and the FBI are continuing to follow any possible leads to find whoever is responsible for the acid attack in a local park that left a woman with severe burns.
Acetic acid - Wikipedia
Acetic acid ... Acetic acid / əˈsiːtɪk /, systematically named ethanoic acid / ˌɛθəˈnoʊɪk /, is an acidic, colourless liquid and organic compound with the chemical formula CH3COOH (also …
ACID | definition in the Cambridge English Dictionary
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.
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 …
Definitions of Acids and Bases, and the Role of Water
In an operational sense, an acid is any substance that increases the concentration of the H + ion when it dissolves in water. A base is any substance that increases the concentration of the OH …
Acid - definition of acid by The Free Dictionary
1. Chemistry a. Of, relating to, or containing an acid. b. Having a high concentration of acid. c. Having the characteristics of an acid. 2. a. Having a pH of less than 7. b. Having a relatively …
acid noun - Definition, pictures, pronunciation and usage notes ...
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 …
Acid - New World Encyclopedia
Acids are essential for life, and many occur naturally. For example, our stomach produces hydrochloric acid (HCl) to help digestion. Acids are also widely used in industries and are in a …