A student placed a beaker of salt water on a hot plate. He waited until the solution of salt water began boiling, then he placed the beaker into an ice bath.
In which direction does heat transfer?
from the dissolved salt into the boiling water
B.
from the beaker of salt water into the ice bath
C.
from the water to the surface of the hot plate
D. from the surrounding air into the beaker of salt water

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.