Q. What is taking place in a reaction as the curve on a reaction pathway graph goes up? A. Heat is being released.
B. Heat is being absorbed.
C. The reaction has stopped.
D. The reaction is slowing down.

ANOTHER ONE THAT I SEARCHED FOR AND COULD'NT FIND I HOPE SOMEONE CAN HELP AND THANKS

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.