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Science Revision (Atoms (Nucleus - Contains Protons and Neurons, size is…
Science Revision
Atoms
Nucleus - Contains Protons and Neurons, size is 1/10000 of an atom
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The number of protons is the same as the number of electrons, meaning atom has no charge
Atomic number = number of protons, mass number = number of protons and neutrons
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Elements, compounds and mixtures
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