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Uranium-235 and uranium-238 are different isotopes of the element uranium. They have different mass numbers due to different numbers of neutrons.
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Decaying unstable element?
Uranium238
What is one bad use of uranium235?
can cause lung cancer
What is true about the fission of uranium235?
The reaction produces more neutrons than were needed to start it.
A uranium235 sample starts with 200 atoms and 700 million years later there are 100 atoms What is the halflife of uranium235?
700 milliion years. The definition of half-life is the period of time during which one-half of the atoms of an element undergo decay into other elements.
What is the form of nuclear energy?
Nuclear energy as used in power plants results from fission of uranium235 and plutonium239
Where does nuclear energy get its power?
From the fissioning of the nuclei of uranium235 and plutonium239. The energy released appears as thermal energy in the surrounding fuel material
What elements contain more than one type of atom?
Most do. They are called isotopes. For a particular element the number of protons in the nucleus is the same, but there can be different numbers of neutrons. For example uranium235 and uranium238 where the number is called the mass number, which is the sum of the numbers of protons and neutrons in the nucleus. Isotopes of hydrogen are specially given individual names (hydrogen, deuterium, tritium) but they are all "chemically" hydrogen (protons=1, electrons=1).
Meaning of nuclear energy?
Nuclear energy is energy released either by fissioning of heavy nuclei such as Uranium235 or Plutonium239, or by fusion of light isotopes such as those of hydrogen.
Where can the most mass be found in an atom?
Essentially all of the atom's mass is in the nucleus. In the lightest atom, that of hydrogen, it's about 99.95 percent. In the heaviest naturally occurring atom, that of Uranium238, it's about 99.979 percent.
How much coal has to be burned to equal the potential energy obtained by breaking one pellet of uranium?
Depends on the size of your pellet. 1 kg of Uranium235 is equivalent to 1500 tonnes of coal.
What is a sentence for energy?
Nuclear energy is obtained by the fissioning of nuclei of uranium235, in a controlled chain reaction in a nuclear reactor, which produces heat that can be converted to electricity by normal power plant methods.
Atomic energy is the energy of heat mass or fluorescence?
Atomic energy is produced when atoms of uranium235 or other fissile material split, or undergo fission. It is nothing to do with fluorescence, and I don't understand 'heat mass'
