Define nuclear energy

Nuclear energy is energy in the nucleus (core) of an atom.

Nuclear energy is the energy stored in atoms that can produce electricity.

Hope that helps. x

conservation of mass

mass before something happens = mass afterwards

the answer is false. this is because for ice to melt, it requires latent heat of melting. latent heat means heat energy required to change phase without any increase in temperatures. therefore, the ice will take energy from the environment to melt hence atmospheric temperatures will reduce.