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A base in chemistry is a substance that donates electrons or hydroxide ions or that accepts protons.

en.wikipedia.org/wiki/Base_(chemistry)

In chemistry, bases are substances that, in aqueous solution, are slippery to the touch, taste astringent, change the color of indicators react with acids to form ...

www.thoughtco.com/definition-of-base-604382

Apr 21, 2017 ... Base definition, as used in chemistry, chemical engineering, and physics.

www.businessdictionary.com/definition/base.html

Definition of base: Chemistry: Metal oxide or other compound that reacts with an acid to neutralize it and produces water and a salt. Bases increase the ...

www.britannica.com/science/base-chemical-compound

Base, in chemistry, any substance that in water solution is slippery to the touch, tastes bitter, changes the colour of indicators (e.g., turns red litmus paper blue), ...

study.com/academy/lesson/base-in-chemistry-definition-example-quiz.html

After this lesson, you will be able to define and describe bases, and explain how they differ from acids. You will learn about real-life examples...

www.gcsescience.com/aa20.htm

but does not dissolve in water, is called a base. For example, copper(II) oxide, iron(II) oxide and zinc carbonate are bases, they do not dissolve in water

www.infoplease.com/science/chemistry/chemistry-what-are-acids-and-bases

Although I've told you that acids and bases aren't hard to understand, I've got bad news: There are not one but three common definitions used to describe acids ...

www.khanacademy.org/science/chemistry/acids-and-bases-topic

In this section we will be talking about the basics of acids and bases and how acid-base chemistry is related to chemical equilibrium. We will cover acid and ...

lrs.ed.uiuc.edu/students/erlinger/water/background/ph.html

Acids Bases and pH Scale. I. Acids *Acids are ionic compounds ( a compound with a positive or negative charge) that break apart in water to form a hydrogen ...