cotton
If I had to choose the best insulator out of steel wool, aluminum foil, cotton and bubble wrap, I would choose the aluminum foil.
Yes, 3 kilograms of cotton (or anything else) is heavier than 2 kilograms of steel (or any other substance).
Cotton and Steel mills
Steel.
Steel is an alloy- which is a compound, or intermixture. So it is not an element or pure substance.
Because it is soft what do you think? should it make by steel wool?
Cotton and Steel mills
Cotton and Steel mills
The properties of a substance are inherent in that substance, for example steel, but steel can be used to make all sorts of different objects. Each object has its own properties, but the basic property of steel is the same in all of them (for the same grade of steel)
Zinc, being a metal, is in most applications a good conducter. Zinc-Oxide, however, is a poor conducter. A comparison of what makes insulators and conducters of electricity, would yield a better answer.
In a steel mill and in products manufactured using steel. Steel is not a naturally occuring substance. It is a product of iron and carbon.
Tin cans are steel, plated with the metal tin. Both tin and steel are very good conductors of heat. Heat from the warm food in the can is quickly conducted through the metal of the can, and radiated into the air surrounding the can. Wrap the can in an insulator, such as a dry cotton towel, and the contents will stay warm longer.polysterene cups are very good insulators, if you are looking for one.