Alkaline

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Alkaline

Alkaline (/ælˈkælaɪn/, from the Arabic word القلوي) is a term used in Chemistry and Biology to refer to a substance that has a pH greater than 7, which is the neutral point on the pH scale. Alkaline substances are also known as bases or basic substances.

Etymology

The term "alkaline" comes from the Arabic word القلوي (al-qaly) which means "the calcined" or "roasted". This is because early chemists obtained alkaline substances by roasting mineral salts.

Related Terms

  • Acid: A substance with a pH less than 7. Acids and bases (alkaline substances) can react to form water and a salt, a process known as neutralization.
  • pH: A measure of the acidity or alkalinity of a solution. The pH scale ranges from 0 (very acidic) to 14 (very alkaline), with 7 being neutral.
  • Base: Another term for an alkaline substance. Bases are substances that can accept protons or donate pairs of electrons.
  • Neutralization: The reaction between an acid and a base to form water and a salt.
  • Salt: The product of a neutralization reaction between an acid and a base.

See Also

External links

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