There are those insulators and conductors in everyday life

Common conductors. Metal.

Copper, aluminum, iron, silver, etc., most of the metals are conductors. The valence electrons in the outermost shell of a metal atom easily break free from the nucleus.

The bondage becomes free electrons, leaving behind the positive ions (atoms real) to form a regular lattice. The concentration of free electrons in the metal is large, so the electrical conductivity of the metal conductor.

Usually larger than other conductor materials. Resistivity of metallic conductors.

It generally decreases as the temperature decreases. At very low temperatures, the resistivity of certain metals and alloys disappears and is transformed into "superconductors."

Ionized gas.

Ionized gases also conduct electricity and are called gas conductors, where the carriers are electrons and positive and negative ions. In general, gases are good insulators. If with the help of external causes, such as heating or with X-rays.

Radiation or ultraviolet radiation dissociates gas molecules, so that the ionized gas becomes a conductor.

In addition, water, colloids, the human body, etc. are also conductors.

Conductors and insulators.

A substance that is good at conducting electric current is called a conductor, and a substance that is not good at conducting electric current is called an insulator. There are a large number of particles of charged matter in the conductor that can move freely, called carriers. Under the action of an external electric field, the carriers move directionally, forming an obvious current.

Insulators The insulator of electricity is also known as a dielectric.

Semiconductor. Semiconductors are materials that have electrical conductivity between conductors and insulators at room temperature. Semiconductors are used in integrated circuits, consumer electronics, communication systems, photovoltaic power generation, lighting applications, high-power power conversion and other fields. Such as diodes.

It is a device made of semiconductors. Whether from the perspective of technology or economic development, the importance of semiconductors is very huge.

The core unit of most of today's electronic products, such as computers, mobile** or digital voice recorders, is closely related to semiconductors. Common semiconductor materials.

There are silicon, germanium, gallium arsenide, etc., and silicon is the most influential one in commercial applications among various semiconductor materials.

Grade 4 Science (Textbook Edition) "Conductors and Insulators".

Common insulators are:

Ceramic, rubber, dry cloth, dry wood, plastic products, air, pure water, glass, common conductors are:

Copper, core, socket contact piece, plug contact, fuse, water, solution, metal, colloid, turbidity, molten liquid, human body.

Insulators: plastic, wood, glass.

Conductors: Metals: stationery boxes, coins, wires; Graphite: Pencil lead.

Common conductors: copper, core, contact piece of socket, contact tip of plug, fuse, water, solution, metal, colloid, human body, etc.

Common insulators: ceramics, rubber, dry cloth, dry wood, plastic products, air, pure water, glass, processed insulating oil, etc.

The law of insulators and conductors: metal, everything with water, and electricity are generally conductors. Others, without water, are definitely insulators.

1. Metals are the most common type of conductors, such as aluminum, iron, copper, silver, etc., and most metals are conductors. The outermost valence electrons of metal atoms can easily break free from the nucleus and become free electrons, leaving behind positive ions (atomic solids) to form a regular lattice.

The concentration of free electrons in metals is large, so the electrical conductivity of metal conductors is usually greater than that of other conductor materials. The resistivity of a metal conductor generally decreases as the temperature decreases. At low polar temperatures, the resistivity of certain metals and alloys will disappear and they will be converted into "superconductors".

2. The second type of common conductor is a solution of electrolyte, such as acid, alkali, and brine solution. Its carriers are positive and negative ions. Experiments have found that most pure liquids can also be dissociated, but to a very small extent, so they are not conductors.

3. The ionized gas can also conduct electricity, which is called a gas conductor, and the carriers in it are electrons and positive and negative ions.

There are many types of insulators: the first type is solids, such as plastic, rubber, glass, ceramic, amber, etc.; The second category is liquids, such as various natural mineral oils, silicone oils, trichlorobiphenyls, etc.; The third category is gases, such as air, carbon dioxide, sulfur hexafluoride, etc.

Glass rods, glasses, plastic rulers, erasers, wooden blocks, sharp knife handles, edible oil, etc. are all common insulators in life.

Definition of insulator: An object that does not easily conduct electricity is called an insulator. Insulators and conductors, there are no absolute boundaries.

Insulators can be converted into conductors under certain conditions. Here we should pay attention to the reason for conducting electricity: whether it is a solid or a liquid, if there are electrons or ions in it that can move freely, then it can be fooled to conduct electricity.

There is no free-moving charge, and under certain conditions, conductive particles can be produced, then it can also become a conductor.

Definition of Conductor: A conductor is a substance that has little resistivity and conducts electric current easily. The presence of a large number of freely moving charged particles in a conductor is called a carrier. Under the action of the external electric field, the carriers move in a directional manner, forming an obvious current.

A conductor is a substance that has a low resistivity and conducts electric current easily. Common conductors are: metal, human body, earth, graphite, acid, alkali, salt water solution, etc.

Substances that are not good at conducting electric current are called insulators, which are also called dielectrics. Common insulators are: ceramics, rubber, dry wood, plastic products, air, pure water, glass, etc.

Conductors are mainly used for cables, because of the grinding characteristics of semiconductor unidirectional conduction, they are mainly made into components with special functions, such as transistors, integrated circuits, rectifiers, lasers, etc. Insulators are mainly used for the shells, electricians' gloves, switches, and capacitors of household blind rocky appliances. In the high-voltage voltage transmission environment, the jujube field is generally a ceramic insulator or a synthetic insulator.