Metal oxides, what are metal hydroxides

According to the properties of oxides, oxides can be divided into four categories.

1) Not a salt oxide.

It can neither react with acids to form salts and water, nor with alkalis to form oxides of salts and water. Such as CO, NO, etc.

2) Amphoteric oxides.

It can react with acids to form salts and water, and also react with alkalis to form oxides of salts and water, such as Al2O3.

3) Acidic oxides.

It can react with alkali to form oxides of salt and water. Most of the non-metallic oxides are acidic oxides, such as CO2, SO2, P2O5, etc.; There are also some non-metallic oxides that cannot react with alkali to form salt and water, they are not acidic oxides, such as NO, CO, etc.; There are also a few metal oxides, such as Mn2O7 and CRO3, which can react with alkalis to form salts and water, which are also acidic oxides. It can be seen that non-metallic oxides and acidic oxides are two different concepts, and it would be wrong to think that "non-metallic oxides are acidic oxides".

Describing the universal properties of alkalis, it is stated that "alkalis can react with most non-metallic oxides to form salts and water." The word "majority" here is absolutely indispensable.

4) Basic oxides.

It can react with acids to form oxides of salt and water. Most of the metal oxides are basic oxides, such as Na2O, CaO, Cuo, etc.; However, there are also some metal oxides that do not belong to basic oxides, such as Mn2O7, CRO3, etc., which are acid oxides, and Al2O3, which are amphoteric oxides. It can be seen that metal oxides and basic oxides are also two different concepts, and it is obviously wrong to think that "metal oxides are basic oxides".

Answer, support me.

Basic oxide: can react with acid to form oxide of salt and water, peroxide is the oxygen in it is -1 valence, this should be seen with sodium oxide and sodium peroxide! For example, sodium oxide is a basic oxide, while sodium peroxide is not. Neutral oxides are like water.

If you don't look at oxides, it can be said that the alkalinity is reduced. What is your question and why do you say lower?

Metal hydroxide refers to the inorganic compound formed by metal cation and hydrogen macrocode oxygen ion, also known as base, which is the hydroxide of metal elements. It can be expressed by the general formula m(oh)n. Such as sodium hydroxide.

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Under normal circumstances, most of the soluble alkali metals and alkaline earth metal hydroxides are strong bases, such as sodium hydroxide NaOH and potassium hydroxide.

KOH, barium hydroxide, lithium hydroxide LiOH, strontium hydroxide, etc.

Metal hydroxides have the properties of alkalis:

It can produce salt and water with acid locust group. Soluble hydroxides undergo metathesis reaction with soluble salts.

Hydroxides, which are insoluble in water or slightly soluble in water, are decomposed into corresponding oxides and water by heating. Generally, alkali metal hydroxides decompose strongly by heat or scorching. Weakly reactive metal hydroxides decompose when heated slightly, such as iron hydroxide.

Very masking or inactive metal hydroxides can decompose at low temperatures.

Hydroxides are generally alkaline, but the strength of the alkalinity varies, depending on the electronegativity of the corresponding element of the metal cation bound to hydroxide.

The less electronegativity, the easier it is for the hydroxide to release hydroxide in solution, and the more alkaline it is. On the contrary, the greater the electronegativity, the easier it is for the hydroxide to be released in the solution, the less hydroxide can be released, and the weaker the alkalinity.

Common metal oxides are: Cuo, Mno2, MGO, Fe2O3, Fe3O4, CaO, Al2O3; Common non-metallic oxides: CO, CO2, SO2, P2O5, H2O, SO3, H2O2.

Metal oxides refer to binary compounds composed of oxygen and another metal chemical element, such as iron oxide (FeO), sodium oxide (NaO), etc. Oxides include basic oxides, acid oxides, peroxides, superoxides, amphoteric oxides.

Question 1: What is metal oxide 20 points Metal oxide is a compound composed of metal elements and oxygen elements, including metal oxides and metal peroxides.

Question 2: Are metal oxides metals Yes.

Question 3: How do metal oxides react with water (i.e., what are the products in general) This is very complicated, and there are different according to the activity of the metal (to emphasize, the upstairs is stupid, metal oxides and peroxides are not the same concept).

Table in order of metal activity.

The oxide of potassium calcium sodium can react with water to form the corresponding base.

The oxide of magnesium and aluminum can be dissolved in water in small amounts under heating conditions to form the corresponding alkali, but it is very rare and can be basically ignored because magnesium hydroxide and aluminum hydroxide are insoluble in water.

Needless to say, the oxides don't react with water.

Question 4: What is an oxide The compound formed by the combination of elements and oxidation is called an oxide (composed of only two elements). For example, carbon dioxide (CO2) and calcium oxide (CAO) can be divided into four categories: acidic oxides, basic oxides, amphoteric oxides, and non-salted oxides according to their different chemical properties, and according to whether they form salts with water and the type of salt generated[1].

There are also many complex oxides.

Oxides are compounds, and they must be pure, and they contain only two elements in their composition, one of which must be oxygen, and the other is a metal oxide if it is a metal element; If it is a non-metal, it is a non-metallic oxide.

To put it simply, element x+o is almost = oxide.

Question 5: What is metal oxide 20 points Metal oxide is a compound composed of metal elements and oxygen elements, including metal oxides and metal peroxides.

Question 6: Are metal oxides metals Yes.

Question 7: What are divalent metal oxides Among metal oxides, metal oxides with a valency of +2 valence are called divalent metal oxides. For example, feo, mgo, cuo, cao, bao, ......

Metal oxides refer to binary compounds composed of oxygen and another metal chemical element, such as iron oxide (FeO), sodium oxide (NaO), etc. Metal oxides include basic oxides, acid oxides, peroxides, superoxides, and amphoteric oxides.

Metal oxides are widely used in daily life. Quicklime is a commonly used desiccant that can also be used for disinfection; Iron oxide (Fe O) is commonly known as iron red and can be used as a red pigment; Catalysts used in some industrial processes are also metal oxides.

The oxidation of metals actually refers to the chemical reaction process in which metals react with oxygen to form oxides. This reaction is not only a regular occurrence in everyday life, but also important in industrial production and scientific research.

The oxidation of metals is mainly due to the high activity of oxygen molecules, which are prone to form oxides with electrons on the surface of metals. For example, when iron is exposed in the air for a long time, the surface will gradually rust, which is the oxidation reaction of iron. Metals such as copper, aluminum, and zinc undergo similar reactions, but the oxides produced are different.

The oxidation reaction of the metal not only causes changes in the surface of the metal, but also has an effect on the properties of the metal. For example, iron becomes more fragile and prone to breakage after oxidation; Copper oxidizes to become more conductive and changes in color.

In industrial production and scientific research, the oxidation reaction of metals is also very important. For example, many metal oxides are important catalysts that facilitate chemical reactions. In addition, the oxidation reaction of metals can also be applied to the research and control of metal corrosion, as well as the protection of metal materials.

In conclusion, the oxidation of metals is an important chemical reaction process, which not only occurs frequently in daily life, but also has a wide range of applications in industrial production and scientific research.

Summary. Metal oxides refer to a class of compounds formed by the chemical bonding of metal elements and oxygen elements, usually with metal ions and oxygen ions forming a crystal structure. Common metal oxides include iron oxide, calcium oxide, alumina, magnesium oxide, etc.

Compared to other substances, metal oxides have many unique properties such as high melting point, high hardness, good electrical and thermal conductivity, etc. Due to the existence of these properties, they are widely used in industrial production and scientific research, such as as catalysts, magnetic materials, optoelectronic devices, etc. At the same time, metal oxides are also one of the important environmental pollutants, such as sulfur oxide, nitrogen oxide, etc., which will have a negative impact on the atmospheric environment.

Metal oxides refer to a class of compounds formed by the chemical bonding of metal and oxygen elements, usually composed of metal ions and oxygen ions. Common metal oxides include iron oxide, calcium oxide, alumina, magnesium oxide, etc. Compared to other substances, metal oxides have many unique properties such as high melting point, high hardness, good electrical and thermal conductivity, etc.

Due to the existence of these properties, it is widely used in industrial production and scientific research, such as catalysts, magnetic materials, optoelectronic devices, etc. At the same time, metal oxides are also one of the important environmental pollutants, such as sulfur oxide, nitrogen oxide, etc., which will have a negative impact on the atmospheric environment.

I'm still a little confused, can you be more detailed?

Metal oxides refer to a class of compounds formed by the chemical bonding of metal and oxygen elements, usually composed of metal ions and oxygen ions. Common metal oxides include iron oxide, calcium oxide, alumina, magnesium oxide, etc. Compared to other substances, metal oxides have many unique properties such as high melting point, high hardness, good electrical and thermal conductivity, etc.

Due to the existence of these properties, it is widely used in industrial production and scientific research, such as catalysts, magnetic materials, optoelectronic devices, etc. At the same time, metal oxides are also one of the important environmental pollutants, such as sulfur oxide, nitrogen oxide, etc., which will have a negative impact on the atmospheric environment.