Yes
It is a nuclear change because there is a change in the nuclear structure of Uranium.
The process of splitting uranium atoms at a nuclear power plant is called nuclear fission. This process releases a large amount of energy in the form of heat, which is then used to generate electricity through steam turbines.
A nuclear power plant does use uranium as fuel It "burns" it in the nuclear sense not the chemical sense
Uranium is used as nuclear fuel.
Uranium
Uranium (or plutonium) is a source of energy (nuclear fuel) in nuclear power plants.
The majority of commercial nuclear power reactors use uranium (natural or enriched) as nuclear fuel.
Fission is the word you are looking for, but the less massive nuclei of the daughter atoms are usually far less stable than the nucleus of the parent, which is why nuclear waste from plant that uses uranium as fuel is extremely dangerous but nuclear fuel for the plant is not.
The energy comes from the constant fissioning (splitting) of atoms within the nuclear fuel, which is normally uranium or plutonium. The energy is released as heat within the reactor, and boils water for the steam turbines that convert it to electricity.
Natural uranium
Uranium is the fuel that is used.
Depending on: - the type of the nuclear reactor - the electrical power of the nuclear reactor - the type of the nuclear fuel - the enrichment of uranium - the estimated burnup of the nuclear fuel etc.