Base | Definition, Examples, & Facts | Britannica
WebBase, in chemistry, any substance that in water solution is slippery to the touch, tastes bitter, changes the color of indicators (e.g., turns red litmus paper blue), reacts with acids to form salts, and promotes certain chemical reactions (base catalysis).
Base (chemistry) - Wikipedia
WebIn the more general Brønsted–Lowry acid–base theory (1923), a base is a substance that can accept hydrogen cations (H + )—otherwise known as protons. This does include aqueous hydroxides since OH − does react with H + to form water, so that Arrhenius bases are a subset of Brønsted bases.
6.1: What is an Acid and a Base? - Chemistry LibreTexts
WebArrhenius's Definition of Acids and Bases. The earliest definition of acids and bases is Arrhenius's definition which states that: 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.
What Is a Base in Chemistry? Definition and Examples
WebJun 19, 2021 · In chemistry, a base is a substance that reacts with acids to form a salt and which releases hydroxide ions, accepts protons, or donates electrons in aqueous solution. Learn about the properties of bases and see examples of bases and their uses.
14.3: Bases: Properties and Examples - Chemistry LibreTexts
WebBases. Bases have properties that mostly contrast with those of acids. Aqueous solutions of bases are also electrolytes. Bases can be either strong or weak, just as acids can. Bases often have a bitter taste and are found in foods less frequently than acids. Many bases, like soaps, are slippery to the touch. Bases also change the color of ...
7.4: Names and Formulas of Bases - Chemistry LibreTexts
WebApr 5, 2021 · Bases. A base can be simply defined as an ionic compound that produces hydroxide ions when dissolved in water. One of the most commonly used bases is sodium hydroxide, illustrated below. Figure 7.4.1 7.4. 1: (A) Sodium hydroxide, a base, is a solid that is typically produced as small white pellets.
Base Definition in Chemistry - ThoughtCo
WebSep 29, 2022 · Anne Marie Helmenstine, Ph.D. Updated on September 29, 2022. In chemistry, a base is a chemical species that donates electrons, accepts protons, or releases hydroxide (OH-) ions in aqueous solution. Bases display certain characteristic properties that can be used to help identify them.
Acids and bases | Chemistry library | Science | Khan Academy
WebIdentifying weak bases and strong bases. 7 questions. Practice. Introduction to acid–base reactions. 4 questions. Practice. Quiz 1. Identify your areas for growth in this lesson: Acids, bases, and pH. Start quiz. Acid-base equilibria. Learn. Weak acid-base equilibria (Opens a modal) Conjugate acid–base pairs
Explainer: What are acids and bases? - Science News Explores
WebNov 13, 2019 · Throughout history, chemists have created different definitions of acids and bases. Today, many people use the Brønsted-Lowry version. It describes an acid as a molecule that will give away a proton — a type of subatomic particle, sometimes called a hydrogen ion — from one of its hydrogen atoms.
Bases - Chemistry Encyclopedia - reaction, water, examples, metal ...
WebBases. Bases are considered the chemical opposite of acids because of their ability to neutralize acids. In 1887 the Swedish physicist and chemist Svante Arrhenius defined a base as the chemical substance that produces hydroxide ions (OH − ) and cations. A typical base, according to the Arrhenius definition, is sodium hydroxide (NaOH).
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