Which one is a true statement about exothermic reactions?

a. the reactions have more heat energy than products.

b. more heat is given off than is put into the reaction.

c. energy from an outside source is continuously being added.

d. the reaction container always feels cold.

i would say a, i'm putting that answer on my test.

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.