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Let's go back to what electricity is - the movement of free electrons throughout a clump of matter. Each atom is composed of positive protons, neutral neutrons, and negative electrons. Electrons are thought to surround the nucleus (neutrons and protons) in a circular orbit.
The world likes to keep balanced. Negative electrons cancel out the positive charge exercised by the protons. Let's consider this: what if an atom has more electrons that atoms? That atom becomes 'loose', or even separates to cause the atom to become an ion. These 'loose' electrons (such as in electrical conductors) allow the electrical force to easily pass. Other nonmetallic objects such as rubber and glass have few free electrons, making it an insulator.
There also happens to be a material know as a 'semiconductor' This is beyond the scope of this article.
Wiki User
∙ 14y ago
Wiki User
∙ 11y agoPlastics and ceramics make good insulators because they do not have free electrons within their structure. Free electrons are (valence) electrons that are unbound within the atomic or molecular matrix. These electrons are available to support current flow. Recall that current flow is not an electron moving through a conductor, but rather is an electron coming into one end of the conductor, the free electrons within the conductor shifting over a tiny bit, and an electron leaving the other end of the conductor. It's like musical chairs, but is musical electrons. If no electrons within the material are available to shift over to support current flow, the material will be highly resistant to current. And plastics and ceramics, because they don't have unbound electrons (free electrons), act as insulators.
Wiki User
∙ 11y agoRubber does not conduct electricity or heat well. This is the quality that makes it a good insulator.
Wiki User
∙ 10y agoTheir electrons are bound, not free to travel and conduct electricity.
Wiki User
∙ 14y agoPolymers are made of monomers which means that they are dense, solid and weapon.
Wiki User
∙ 13y agoNo, they are the exact opposirte.accually,when you want to stop electrical current,touch glass/rubber to it to stop.That is why cords have rubber aroung them,so you wont get ELECTRIFIED>:)
Wiki User
∙ 14y agoBecause it keeps the heat in and the cold out and can conduct electricity
Wiki User
∙ 11y ago- it traps heat
Wiki User
∙ 13y agoyes
Wiki User
∙ 11y agoRubber
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whenever there biodegradable materials in the soil the bacteria feed on them and turn them into useful chemicals which are good for the soil
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Name two other materials that are poor conductors of electricity and might make good insulators?
plastic, glass and rubber
What are 2 good insulators of heat?
glass rubber
What are good insulators?
Good insulators include glass, styrofoam, plastic, wood, rubber, cloth, air, glass, and etc. It really depends on what you want to use it for. For example, fiberglass or styrofoam works the best as heat insulators. And rubber or glass as electric insulators.
What are for good electrical insulators?
Rubber, Glass, Plastic, Porcelain, etc.
What does an electrical insulator have?
Electrical insulators are made from materials that are poor conductors of electricity. Metallic elements are good conductors, non metallic elements are poor conductors. Some materials used as insulators are, paper, glass, ceramics, rubber and plastics.
What substances are the best insulators?
Usually nonmetals. Rubber, plastic, wood, cloth, paper, Styrofoam, tinfoil (to reflect the heat.)The most common insulator for electricity is plastic.
What are good examples of heat insulators?
vacuum, styrofoam, plastic, wood, glass, rubber
What materials make good insulators?
Rubber, Styrofoam, air pockets, cloth, plastic
Name 3 good insulators of electricity?
plastic, glass, and rubber_porcelain, wood, and yeah rubber
What is the name of materials that are not good conductors of electricity?
They are called insulators. Rubber is an example of a good electrical insulator.More:PlasticGlassAirWoodCeramicPorcelainPaperVarnishMineral OilSlateMarblePolyethyleneSiliconePVCKaptonTeflon
List of good insulators?
Some materials such as "silicon dioxide or teflon" are very good electrical insulators. A much larger class of materials, for example "rubber-like polymers and most plastics" are still "good enough" to insulate electrical wiring and cables even though they may have lower bulk resistivity. These materials can serve as practical and safe insulators for low to moderate voltages (hundreds, or even thousands, of volts)."
What are some good insulaters and bad ones?
Good insulators of both electricity and heat are: Wood Rubber Glass Plastic
