what are oxides?

Answer 1

An oxide is a chemical compound of oxygen with other chemical elements. In the 18th century, oxides were named calxes or calces after the calcination process used to produce oxides. Calx was later replaced by oxyd.

Oxides can be named after the amount of oxygen atoms in the oxide. Oxides containing only one oxygen are called oxide or monoxide, those containing two oxygen atoms dioxide, three trioxide, four tetroxide, and so on following the Greek numerical prefixes.

There are two other types of oxide—peroxide and superoxide. Both count as oxides but have different oxidation states and react in different ways compared to oxides.

Chemical properties
Oxides are formed in redox reactions through oxidation in which a reducing agent is allowed to react with molecular oxygen (O2) or oxidizing agents which contain oxygen, such as hydrogen peroxide (H2O2) and permanganate (MnO4−). Oxides are characterized by a redistribution of electrons, in which the oxygen atoms have a net surplus of electrons and the other atoms a net lack. In oxides of hydrogen, carbon, nitrogen, sulfur, phosphorus and halogens, covalent bonds occur between oxygen and the other elements. Generally, these are gases or fluids at room temperature. Oxides of metals occur as ionic compounds, or salts, which are solid at room temperature. Oxide salts are generally insoluble in water, though some react with it.

Generally, oxides are not conductive to electricity. This property is most commonly taken advantage of with silicon dioxide, as silicon can easily be oxidized and the resulting part can be made into a transistor. This is the basis for much of modern computer technology.

Types of oxides
Oxides of more electropositive elements tend to be basic. They are called basic anhydrides; adding water, they may form basic hydroxides. For example, sodium oxide is basic; when hydrated, it forms sodium hydroxide.

Oxides of more electronegative elements tend to be acids. They are called acid anhydrides; adding water, they form oxoacids. For example, dichlorine heptoxide is acid; perchloric acid is a more hydrated form.

Some oxides can act as both acid and base, at different times. They are amphoteric. An example is aluminium oxide. Some oxides do not show behavior as either acid or base.

The oxides of the chemical elements in their highest oxidation state are predictable and the chemical formula can be derived from the number of valence electrons for that element. Even the chemical formula of ozone is predictable as a group 16 element. One exception is copper for which the highest oxidation state oxide is copper(II) oxide and not copper(I) oxide. Another exception is fluoride that does not exist as expected as F2O7 but as OF2 with the least electronegative element given priority. [1]. Phosphorus pentoxide, the third exception is not properly represented by the chemical formula P2O5 but by P4O10

Answer 2

Oxides are the products resulting from a material undergoing oxidation or combining with oxygen. An example of an oxide is ordinary rust. Oxygen combines with iron to form the oxide Fe2O3. Iron can also form another oxide, Fe3O4 depending upon its valence. There are many oxides commonly formed by such ordinary things such as fire which is simply rapid oxidation. An example of this might be when a carbon containing fuel burns in the presence of sufficient oxygen and forms carbon dioxide, or CO2. If there is insufficient oxygen present to form CO2, a more toxic substance Carbon Monoxide or CO can form. The reason Carbon Monoxide is so much more toxic than CO2 is that the carbon in Carbon Dioxide is completely oxidized while the carbon in CO is not completely oxidized and can, therefore, combine with the hemoglobin, or iron, in your red blood cells to form carboxyhemoglobin. When this happens, the carboxyhemoglobin cannot carry oxygen to the tissues in your body and they begin to die. With sufficient exposure to CO, you will die.

Now, you should be able to think of many more oxides that you encounter in every day life.

Answer 3

What Are Oxides

Answer 4

An oxide is a chemical compound of oxygen with other chemical elements

Answer 5

Chemicals that allow oxidation of metals. Like Bleach.

Answer 6

Crazy ottot got it right. any metal combined with oxygen forms oxides.

Answer 7

Any chemicals that contain oxygen, is an oxide.

Answer 8

they are compound of O2 with metals.