The strength of the bonds from the nucleus to the electrons allows (or doesn't) the electrons to move from atom to atom (as long as another is on it's way...) Something like Iron (Fe) has very loose electron bonds and is very conductive (heat and electricity) whereas glass has a very strong electron bond and rarely conducts (at the right temperature ANYTHING conducts.)
Materials with poor thermal conductivity, like wood, rubber, and styrofoam, do not conduct heat efficiently. These materials have high resistance to the flow of heat energy, which makes them good insulators.
Insulator materials will not carry or conduct electricity.
copper, metals...
the materials like metal(which have free electrons) conduct heat and light both and those materials which are formed by covalent bond (do not have free electrons) generaly non metals do not conduct heat and electricity.
"Conductivity Countdown: Investigating Materials for Electricity Flow"
Usually, yes.
The water inside the fruit or the vegetable, makes it conduct electricity.
It contains citric acid and other salts which are conductors of electricity in the presence of water which is there of course.
Materials that do not conduct electricity are called insulators. Examples include rubber, plastic, glass, and ceramic. Insulators have high resistance to the flow of electricity due to the lack of free-flowing electrons.
cell
yes all materials conduct electicity , but some are good conductor , some poor and some very poor
Styrofoam is an example of an object that doesn't conduct heat well. Its low thermal conductivity makes it an effective insulator, often used in packaging materials to keep items insulated from temperature changes.