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9 Cards in this Set
- Front
- Back
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Nucleus
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The tiny positively charged centre of an atom composed of protons and neutrons
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Nucleons
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Protons and neutrons - the sub-atomic particles found in the nuclei of atoms
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Strong nuclear force
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The force that holds protons and neutrons together within the nucleus of an atom
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Electrostatic forces
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the forces or attraction and repulsion between electrically charged particles
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Proton number
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The number of protons in the nucleus of an atom, same as the atomic number
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Isotopes
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Atoms with the same number of protons but different numbers of neutrons
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Relative atomic mass
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Ar = Average mass of an atom/ 1/12th the mass of 1 atom of carbon 12
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Atomic orbital
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A region of space around an atomic nucleus where there is a high probability of finding an electron
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ionisation energy
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The energy required to remove a mole of electrons from a mole of isolated gaseous atoms or ions.
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