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Calcium oxide (CaO), commonly known as quicklime or burnt lime, is a widely used chemical compound. It is a white, caustic, alkaline crystalline solid at room temperature. The broadly used term lime connotes calcium-containing inorganic materials, in which carbonates, oxides and hydroxides of calcium, silicon, magnesium, aluminium, and iron predominate, such as limestone. By contrast, quicklime specifically applies to a single chemical compound.

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Is calcium oxide a element or compound?

It would be a compound, made of Calcium and Oxygen.


How much elemental Calcium is there in Calcium oxide?

There is no elemental calcium in calcium oxide. Calcium oxide is a compound made up of calcium and oxygen atoms bonded together. When calcium oxide reacts with water, it forms calcium hydroxide, which contains calcium ions but not elemental calcium.


Which element is made of calcium and oxygen?

None. Calcium and oxygen are both elements that can combine to form the compound calcium oxide, CaO.


What product can be made by adding water to calcium oxide?

calcium hydroxide is formed.


When limestone is heated what gas is made?

Calcium oxide


Does calcium oxide have 2 ionic substances?

Calcium oxide is a single ionic substance made of two different ions. Calcium oxide (Ca2+) and oxide ions (O2-). But the two different ions are generally not considered substances in and of themselves.


Is calcium oxide a positive or negative ion?

Calcium oxide is a compound composed of calcium (Ca) and oxygen (O) ions. Calcium has a 2+ charge, while oxygen has a 2- charge. Therefore, calcium oxide is made up of a positive calcium ion (Ca2+) and a negative oxide ion (O2-).


What is the word equation for extraction of calcium from calcium oxide by electrolysis?

The word equation for the extraction of calcium from calcium oxide by electrolysis is: Calcium oxide (solid) -> Calcium (liquid) + Oxygen gas.


What are two products made from calcium compounds?

Two products made from calcium compounds are chalk (calcium carbonate) and cement (calcium oxide).


What is calcium oxide?

calcium oxide is calcium combine whit oxygen


Is calcium oxide illegal?

Calcium oxide is legal.


What does calcium oxide mean?

CaO is calcium oxide