#1: what was the key characteristic by which dmitri mendeleev arranged his periodic table?

a. increasing atomic number

b. electron configuration

c. decreasing atomic number

d. increasing atomic mass

**my d. increasing atomic mass

is that right?

the answer is definitely c.

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.