A good thermal insulator has to have tight molecules that dont let heat through good thermal insulators such as Plastic wood cork tinfoil rubber
Two good Insulators are foam and styrafoam
Usually nonmetals. Rubber, plastic, wood, cloth, paper, Styrofoam, tinfoil (to reflect the heat.) The most common insulator for electricity is plastic.
because it's so thick and choppy it's hard for electrons to pass through it
Usually nonmetals. Rubber, plastic, wood, cloth, paper, Styrofoam, tinfoil (to reflect the heat.)
when it absorbs heat really well. (i think confirm it!) Not really. If the insulation in the walls of your house absorbed heat, you would be very uncomfortable. Just the… opposite really. Not transferring the heat out of the house or the cold in makes for a good insulator. Not transferring something is what the insulation does. The plastic coating on electrical wire. Glass or anything that doesn't conduct electricity is a good insulator. Anything that separates two or more things from coming into contact with each other.
An element can be good insulator if it cannot conduct electricity at all. and fe or iron
Electrical current is the movement of free electrons. A free electron is one that has been forced lose of it's orbit and is drifting between the other atoms. If you were to pu…t a peace of metal between the terminals of a car battery it would conduct a a lot of current, but a peace of wood, hardly any, if any at all, the reason being, the electrons are not so easy to force out of they're orbits as the metal, so wood makes a good insulator because it is not a good conducter of electrical current, or it is, on a common scale adverse to the movement of free electrons.
The most common usage of (thermal) insulation of heat are Ceramics.
the insulator s metal must has fully filled orbital without any free electron
Rubber, Plastic, Wood, Cloth, Paper, Styrofoem, Tinfoil.
yes some are but some plastic are not good
Trapped air is the best, like a thermal flask. Water is pretty good, as well as fabrics in some clothes.
because in plastic the bonds are tightly bound and such results in tightly bound electrons hence no free electrons and no passage of electricity.
Styrofoam is a good insulator because the plastic foam contains billions of trapped gas bubbles. Gases hinder heat conduction because their molecules are very far apart making… it difficult for other molecules to collide with them. When molecules DO collide, they either give or take away energy. The polystyrene plastic in between the bubbles is also a good insulator. Its molecules are so big that they can't move around much - thus hindering heat transfer.
Most bricks are relatively high density, and also generally good heat conductors, and thus poor insulators. That is why they feel cool to the touch at room temperature. Some… houses are constructed with hollow bricks. Air is a relatively good insulator, but suffers from convection so large air spaces are only moderately good insulators. Adding foam to the air spaces would be better. Kilns often use a porous insulating firebrick that resembles pumice, and is actually a relatively good insulator.