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 have a pH less than 7, that are hydrogen-containing molecules or ions able to give up a proton to a base, or that are substances able to accept ...
Acid | Definition, Examples, Types, Uses, & Facts | Britannica
2024年10月3日 · 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, and promotes chemical reactions (acid catalysis).
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 electropositive group to form a salt, or containing an atom that can accept a …
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 (\(\ce{HCl}\)) is an acid because it forms \(\ce{H^{+}}\) when it dissolves in water.
What Is an Acid in Chemistry? Definition and Examples
2023年2月14日 · An acid is a hydrogen ion or proton donor or an electron pair acceptor. Not all compounds containing hydrogen are acids. Acids have a pH less than 7, turn litmus paper red, taste sour, and react with bases. Examples of acids include hydrochloric acid (HCl), sulfuric acid (H 2 SO 4), and acetic acid (CH 3 COOH).
ACID | English meaning - Cambridge Dictionary
ACID definition: 1. any of various usually liquid substances that can react with and sometimes dissolve other…. Learn more.
Acid: Definition and Examples in Chemistry - ThoughtCo
2020年1月13日 · An acid is a chemical species that donates protons or hydrogen ions and/or accepts electrons. Most acids contain a hydrogen atom bonded that can release (dissociate) to yield a cation and an anion in water. The higher the concentration of hydrogen ions produced by an acid, the higher its acidity and the lower the pH of the solution.
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 into contact with.
Meaning of acid – Learner’s Dictionary - Cambridge Dictionary
one of several liquid substances with a pH of less than 7 that react with other substances, often burning or dissolving them: hydrochloric acid. acid. adjective. uk / ˈæsɪd / us. (also acidic, uk / …
Acids and Bases - Definition, Examples, Properties, Uses ...
An acid is any hydrogen-containing substance that is capable of donating a proton (hydrogen ion) to another substance. A base is a molecule or ion able to accept a hydrogen ion from an acid. Acidic substances are usually identified by their sour taste.