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Physics: It has metallic luster, good electrical and thermal conductivity, and most of them are solid at room temperature and pressure (except for mercury, which is liquid, that is, mercury), and have good ductility.
Chemistry: The outermost electron number of atoms is less than 4 volatile electrons, all of which are composed of metal crystals, which contain atoms, ionized cations and electrons (the reason for conduction), most of which can react with air (oxygen) (except platinum and gold), most of which can react with non-oxidizing acids (copper, mercury, silver, platinum, gold), a small number of active metals can directly react with cold water (potassium, calcium, sodium), aluminum and magnesium can react with hot water, iron can react with water vapor at high temperature, and metal elements are only used as reducing agents in chemical reactions. It has strong reducing property and can react with strong oxidizing substances (such as oxygen, chlorine, nitric acid, concentrated sulfuric acid, etc.).
It should be about the same.
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Physical properties of metals:
1) Commonality of physical properties of metals: metals are solid (except mercury) at room temperature, with metallic luster, and most metals are good conductors of electricity and heat, with ductility, high density and high melting point.
2) Characteristics of physical properties of metals: most metals are silvery-white, but copper is purple-red and gold is yellow; At room temperature, most metals are solid, but mercury is liquid.
Density: Max: Osmium.
Minimum: Lithium. Melting Point: Maximum: Tungsten.
Minimum: Mercury. Hardness: Maximum: Chromium.
Minimum: cesium. Chemical properties of metals:
1) Most metals can oxidize with oxygen to form oxides.
2) Reactive metals can be replaced with dilute acids such as dilute sulfuric acid and dilute hydrochloric acid to release hydrogen.
3) The more reactive metal can be replaced with the solution of the less active metal compound, and the less active metal can be replaced.
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Chemical properties of metals:
1. The metal in front of hydrogen can react with weak oxidizing strong acid to replace the hydrogen in the acid (concentrated sulfuric acid, nitric acid, strong oxidizing strong acid react with metal and do not generate hydrogen).
2. Metals with strong activity can react with metal salt solutions with weak activity.
3. Most of the coarse and high metals can react with oxygen.
4. Theoretically, the metals in front of h can have a chemical reaction with water. At room temperature, potassium rock, calcium, sodium, etc. can react violently with water, magnesium, aluminum, etc. can react with hot water, and metals such as iron can react with water vapor at high temperatures.
5. Minglu metal has no oxidation, but metal ions have oxidation, and the weaker the activity, the stronger the ionic oxidation of the metal formed.
6. Metals have reducibility, and the weaker the activity, the weaker the reducibility of metals.
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1. Most of the empty metal has a silvery-white metallic luster, and some show other luster, such as gold is the color of Huangquezhen, copper is red, etc., which can be used as decorations.
2. Metal has good conductivity and can be used to make wires, such as copper wires, aluminum wires, etc.
3. Metal has good thermal conductivity and can be made into cooking utensils, such as cooking utensils such as pots made of iron.
4. The metal has good ductility and can be rolled into a book or drawn into a coarse wire, such as gold foil and gold wire.
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Chemical properties of metals:
1. Most metals can react with oxygen;
2. Most metals can react with dilute hydrochloric acid or dilute sulfuric acid;
3. Some metals can react with the solution of metal compounds.
Metal is a kind of substance with shiny, malleable, easy conductivity, thermal conductivity and other properties. Bonds or the vast majority of metal elements on the earth exist in nature in a chemical state, this is because the chemical properties of most metals are relatively active, only a very small number of metals such as gold, silver, etc. exist in a free state, metals are widely present in nature, and are widely used in life, and are very important and most widely used in modern industry.
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Metallic commonality is a universal property that all kinds of metals have:
1.Metals all have a metallic sheen.
Most metals are silvery-white, and a few have special colors (e.g. copper is purplish-red, gold is golden-yellow).
2.Metals all have good electrical conductivity.
Silver has the best electrical conductivity, followed by copper.
3.Metals have good ductility.
Metals also have good ductility and can be cast, calendered, and stretched. It can be rolled into a book or drawn into silk, such as ** can be made into gold foil and drawn into gold wire.
Metallic Properties:
Because the electrons of metals tend to detach, they have good electrical conductivity, and metal elements are usually positive in compounds, but when the temperature is higher, the resistance will increase because of the thermal ** hindrance of the nucleus. The bonds between metal molecules are metallic bonds, so they can be re-established by changing positions at will, which is why metals have good stretchability.
In nature, the vast majority of metals exist in a chemical state, and a few metals such as gold, silver, platinum, and bismuth exist in a free state. Most of the metal minerals are oxides and sulfides, and other forms are chlorides, sulfates, carbonates and silicates.
The above content reference: Encyclopedia - Metal.
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It reacts with non-metals such as oxygen, reacts with acids to form salts and hydrogen, and reacts with certain salts to form additional salts and metals.
1. Metal is a kind of manuscript shed with luster, that is, a substance that strongly reflects visible light, is malleable, and is easy to conduct electricity and heat;
2. Non-ferrous metals in the narrow sense, also known as non-ferrous metals, are collectively referred to for all metals other than iron, manganese and chromium. Non-ferrous metals in a broad sense also include non-ferrous alloys. Non-ferrous alloy is an alloy composed of a non-ferrous metal as a matrix and the addition of one or several other elements;
3. Synthetic metal is a substance composed of two or more elements and at least one of which is composed of metal elements. Alloys composed of two elements are collectively referred to as "binary alloys", and alloys composed of more than three elements are collectively referred to as "multi-alloys". The structure and properties of an alloy are determined by the characteristics of the interactions between the components that make up the alloy.
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