Electrons have a) a positive charge and relatively low mass b) a negative charge and relatively high mass c) a neutral charge and relatively high mass d) a negative charge and relatively low mass

"the periodic table is arranged in order of atomic number."

conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object. collisions between adjacent atoms and molecules transfer kinetic energy from the warmer to the cooler object. the objects must be in physical contact.