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a battery consists of two or more galvanic cells connected to each other electrically.
electrons that have been emitted from the nucleus of an atom of a radioactive element.
compounds that consist of only two types of atoms.
the energy released when a nucleus is formed from its component particles.
a molecule that is so big that we can see it.
the part of the Earth and its atmosphere in which life can exist.
Niels Bohr put forward the theory that electrons move in certain orbits about the nucleus.