Answer:
3: Atoms X and Y will have a smaller atomic mass than atom Z
7: Fissile
8: It is used in nuclear power plants
Explanation:
3
The process of nuclear fission is where one unstable atom (in this case atom Z) splits into two smaller atoms (atoms X and Y) and releases energy in the form of radiation.
Hence, the combined atomic mass of X and Y cannot be grater than the mass of atom Z, fission does not need to be at high temperatures to take place, and the mass of element X will never equal the mass of element Z.
7
In nuclear fission, the energy is produced by the decay of radioactive elements, and that energy can not be obtained by <u>combustion</u>. Stable elements will not undergo fission, and low mass elements tend to be very stable too.
8
The energy produced from nuclear fission is not always controllable, that is why disasters such as nuclear meltdowns happen, because the energy output cannot be controlled. The atoms in the sun undergo fusion, and not fission. Once again, nuclear fission does not require high temperatures (nuclear fusion does, hence why the sun has such a high temperature).
