Question

nuclear fission and fusion both affect the nucleus of an atom. choose all of the items below that are correct. (choose 2) a the final products of fission and fusion are elements that are different than the original b fusion involves the splitting apart of large atoms into smaller ones c fission occurs mostly with elements heavier than lead on the periodic table d two hydrogen atoms can go through fission to form helium e fusion and fission involve a loss or gain of electrons

Explanation:

• In nuclear fission, a large - nucleus splits into smaller nuclei, and in nuclear fusion, small nuclei combine to form a larger nucleus. Both change the identity of the original atoms, so the final products are different elements than the original (A is correct).
• Fission occurs mainly with heavy - elements (heavier than lead on the periodic table), like uranium and plutonium (C is correct).
• Fusion is the combination of small atoms, not the splitting of large atoms (B is incorrect).
• Two hydrogen atoms undergo fusion to form helium, not fission (D is incorrect).
• Fusion and fission involve changes in the nucleus, not the loss or gain of electrons (E is incorrect).

Answer:

A. The final products of fission and fusion are elements that are different than the original
C. Fission occurs mostly with elements heavier than lead on the periodic table