5. The 6-volt and D-cell size batteries we had you buy at the hardware store are examples of batteries. In a , the whole outside casing is made of zinc and is the negative electrode.

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

answerleaving cheese out to get moldy;

alchemy hadn't scientific methods of study, appeal to mysticism and fantasy, the knowledge of chemistry and physics were modest at that time.

alchemy was - but as new rules were discovered it either changed into chemistry or it became "unscientific".