Styrofoam is the best material to use as an insulator.
Styrofoam is the best insulator, since the temperature of the water in the styrofoam glass decreased the least.
If you mean what "state" of matter is the best insulator then you're probably looking for gas as the answer. The state of matter that is best as a thermal insulator is gas.
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A type of matter that is a poor conductor of heat and electricity is usually the best insulator. This includes materials like rubber, plastic, wood, and glass, which have high resistance to the flow of heat or electricity due to their molecular structure. Additionally, materials with trapped air pockets or low thermal conductivity are also good insulators.
Copper - best conductor Glass - moderate insulator Rubber - good insulator
Metal is the worst insulator of heat and electricity due to its high thermal and electrical conductivity properties. Metals allow heat and electricity to flow through them easily, making them poor insulators compared to materials like wood, plastic, or rubber.
Rubber is an example of a very good insulator. It is often used to cover electrical wires to prevent the flow of electricity, as it does not conduct electricity easily due to its high resistance.
its an insulator
A plastic comb is an insulator. Plastic is a type of material that does not allow electric current to flow easily through it, making it a good insulator.