For Sound, lead or massive concrete; for Heat, fibrous non-conducting materials such as fibreglass and asbestos; for Electricity, ceramics, glass, and plastics.
Note, a vacuum is an almost trivial answer for both heat and sound.
One of the best solid insulators is glass. It has high resistance to electrical current and is widely used in electrical insulators, particularly for high-voltage applications. Other good solid insulators include ceramics and plastics.
Most Metals are the best conductors. Like, silver. The best insulators are plastic, like glass. These materials are some of the best conductors/insulators because of their ability/inability to conduct electric current. Electric current is the flow of electric charge through a medium. Insulators have a high resistance and do not allow electrons to flow easily through them. Conductors have a low resistance allowing electrons to flow freely. In order to say which is the best or worst conductor you can check a resistivity table(typically measured in ohms). Be careful to look at the temperature of the material because that can change the resistivity.
Polystyrene and polypropylene are considered good insulators due to their low thermal conductivity. They are commonly used in applications where insulation properties are important, such as in packaging materials or electrical components.
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.
Materials such as fiberglass, mineral wool, and foam board are commonly used as thermal insulators due to their low thermal conductivity properties. These materials help reduce the transfer of heat, keeping buildings cool in the summer and warm in the winter. Additionally, aerogel and vacuum insulated panels are considered some of the best thermal insulators with very low thermal conductivity.
Styrofoam
minecraft
One of the best solid insulators is glass. It has high resistance to electrical current and is widely used in electrical insulators, particularly for high-voltage applications. Other good solid insulators include ceramics and plastics.
3 good insulators are, a wooden spoon, a wooden handle on a pot, and anything else you can think of thats wooden
Plastic, rubber, glass, air...
Usually nonmetals. Rubber, plastic, wood, cloth, paper, Styrofoam, tinfoil (to reflect the heat.)The most common insulator for electricity is plastic.
Most Metals are the best conductors. Like, silver. The best insulators are plastic, like glass. These materials are some of the best conductors/insulators because of their ability/inability to conduct electric current. Electric current is the flow of electric charge through a medium. Insulators have a high resistance and do not allow electrons to flow easily through them. Conductors have a low resistance allowing electrons to flow freely. In order to say which is the best or worst conductor you can check a resistivity table(typically measured in ohms). Be careful to look at the temperature of the material because that can change the resistivity.
examples plastic Rubber oil
Heat, cold, pollution
air
foam,wool,wood,cork,and,fur
Conductors are materials that allow electrons to flow easily through it. Metals are the best examples of conductors. Insulators to the opposite; they don't like letting their electrons flow. Glass, rubber, and wood are some examples of insulators.