Which one of the following statements is not correct? a) in any physical process, such as dew forming on grass or carbon dioxide subliming, the internal energy of the system does not change. b) when dry ice sublimes to form co2 (g), the internal energy of surroundings decreases. c)when dew forms on grass overnight the energy of the surroundings (grass, air, etc) increases. d)when dry ice sublimes to form co2 the energy of the carbon dioxide increases e) when dew forms on grass overnight the energy of the water molecules decreases.

the role of the microscope world in creating new materials .

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.