Skip to main content
calcium oxide

calcium oxide

5.3
A white solid chemical used in building and industry that makes lime when water is added and gets hot
  • noun
  • /ˈkæl.si.əm ˈaɪ.ɡɪkˌsaɪd/
  • Specialized
translation icon : óxido de calcio
  • Eggleston explains how it works: "The cane juice is mixed in a tank, then lime in the form of calcium oxide is added to the tank and mixed."

And what we get out of that process is calcium oxide, which is the molecule we then use in cement.

Autoplay Next

Examples

  • And what we get out of that process is calcium oxide, which is the molecule we then use in cement.

  • So there were little blocks of undissolved calcium oxide or quick lime that remained inside Roman concrete.

  • So we dissolve and calcium oxide is ionic and it dissociates to give calcium cations and oxide anions.

  • The production of calcium oxide is essential for creating calcium hydroxide used in various industrial processes.

  • When mixed in construction projects, calcium oxide improves the strength and durability of concrete.

  • During the decomposition of limestone, both calcium oxide and carbon dioxide are produced as byproducts.

Synonyms

lime
vscalcium oxide
  • Specialized
14 4.4

A white powder used in building and farming to make soil less acidic

is the specific white caustic crystalline solid emphasized in manufacturing contexts
quicklime
vscalcium oxide
  • Specialized
2 8.3

A white chemical made by heating a type of rock that burns skin and heats up in water

is the white caustic crystalline solid used broadly in construction and chemical industries
unslaked lime
vscalcium oxide
  • Specialized
9.9

A white, very strong chemical used to make mortar and cement

is the same chemical described as a general industrial component
burnt lime
vscalcium oxide
  • Specialized
7.4

A white powder made by heating limestone that reacts with water

is the standard chemical defined by composition and broad industrial uses
calcined lime
vscalcium oxide
  • Specialized
8.1

A white powder made by heating limestone that is used to make lime and in industry

is the white caustic crystalline solid used broadly in construction and chemical industries
caustic lime
vscalcium oxide
  • Specialized
6.6

A white powder made by heating limestone, used in building and farming

is the chemical solid used chiefly in production of calcium hydroxide and construction
calx
vscalcium oxide
  • Archaic
9.9

A white powder like chalk made from calcium used in chemical processes

is the white caustic crystalline solid used chiefly in the manufacture and industry
fluxing lime
vscalcium oxide
  • Specialized
9.9

A white powder used to help melt and clean metals and to make slaked lime

is the broader chemical component also used to produce calcium hydroxide

Surface Forms

calcium oxide singular

Morphology

calcium + oxide

The compound is fully compositional: 'calcium' (the element) + 'oxide' (a compound formed with oxygen) yields the oxide of calcium, so a learner who knows both constituents can infer it is a compound of calcium and oxygen. This element+oxide pattern is regular and cross-linguistically transparent, though learners might not infer detailed properties (e.g., causticity) without extra technical knowledge.

Etymology

Calcium oxide is the chemical name for 'quicklime', a white powder made when limestone is heated. The name joins calcium, an old word for 'lime', and oxide, meaning 'made with oxygen', so it tells you the substance is lime joined with oxygen.